Field Observations

47.3715°N 122.1694°W (Kent, WA; 5.0 km from Kent station). EXIF: 2026-05-17 12:52:35. Lacecap-style inflorescences at peak bloom. GDD₃₂ estimated from Kent May 16: 2149.3 + ~24/day trend. Caption from filename. Batch caption workflow.

47.3715°N 122.1698°W (Kent, WA; 5.0 km from Kent station). EXIF: 2026-05-17 10:38:09. Full leaf with fruit/seed structures forming. Caption also notes "full leaf" — consistent with earlier leaf emergence observation (2026-04-19, 1410 GDD₃₂). GDD₃₂ estimated from Kent May 16: 2149.3 + ~24/day trend. Batch caption workflow.

47.3934°N 122.0463°W (Maple Valley, WA, Lake Wilderness Arboretum; ~11.0 km from Issaquah station). EXIF: 2026-05-15 08:04:59. Inconspicuous greenish-yellow flower buds visible at leaf axils on new growth, not yet open. GDD₃₂ estimated from Issaquah May 14: 2121.1 + ~23/day trend (cool/wet pattern). Caption from filename. Batch caption workflow.

47.3934°N 122.0464°W (Maple Valley, WA, Lake Wilderness Arboretum; ~11.0 km from Issaquah station). EXIF: 2026-05-15 08:04:47. Small white five-petaled flowers fully open along prostrate stems. GDD₃₂ estimated from Issaquah May 14: 2121.1 + ~23/day trend (cool/wet pattern). Caption from filename. Batch caption workflow.

47.4916°N 122.0258°W (Issaquah, WA; 0.0 km from Issaquah station). EXIF: 2026-05-14 09:06:05. Panicles open with pale-lavender florets; 3 days after flower-buds-visible observation (2026-05-11) → bud-to-bloom interval ~85 GDD₃₂. GDD₃₂ estimated from Issaquah May 13: 2098.2 + ~22/day trend (cool/wet pattern). Caption from filename. Batch caption workflow.

47.4919°N 122.0264°W (Issaquah, WA; 0.0 km from Issaquah station). EXIF: 2026-05-14 08:59:21. Bright lighter-colored new foliage at branch tips; spring shoot flush in progress. GDD₃₂ estimated from Issaquah May 13: 2098.2 + ~22/day trend (cool/wet pattern). Caption from filename. Batch caption workflow.

47.4917°N 122.0255°W (Issaquah, WA; 0.0 km from Issaquah station). EXIF: 2026-05-14 08:51:19. Pointed reddish-brown terminal buds swelling on shaded specimen; flushing later than typical Puget Sound timing — likely an individual or microsite-driven delay. GDD₃₂ estimated from Issaquah May 13: 2098.2 + ~22/day trend. Caption from filename. Batch caption workflow. [VERIFY] late-season timing for bud swell.

47.4917°N 122.0260°W (Issaquah, WA; 0.0 km from Issaquah station). EXIF: 2026-05-14 08:49:41. Solitary flower buds enlarging at leaf axils, not yet open; precedes camellia-like white bloom. GDD₃₂ estimated from Issaquah May 13: 2098.2 + ~22/day trend (cool/wet pattern). Caption from filename. Batch caption workflow.

47.4916°N 122.0258°W (Issaquah, WA; 0.0 km from Issaquah station). EXIF: 2026-05-11 14:02:30. Panicles developing, buds tight, not yet showing color. GDD₃₂ estimated from Issaquah May 10: 2009.6 + ~25/day trend. Caption from filename. Batch caption workflow.

47.4917°N 122.0255°W (Issaquah, WA; 0.0 km from Issaquah station). EXIF: 2026-05-11 14:02:01. Bud showing colored petals, not yet fully open. GDD₃₂ estimated from Issaquah May 10: 2009.6 + ~25/day trend. Caption from filename. Batch caption workflow.

47.4917°N 122.0254°W (Issaquah, WA; 0.0 km from Issaquah station). EXIF: 2026-05-11 14:01:38. Small fruitlets developing after petal fall. GDD₃₂ estimated from Issaquah May 10: 2009.6 + ~25/day trend. Caption from filename. Batch caption workflow.

47.4917°N 122.0251°W (Issaquah, WA; 0.0 km from Issaquah station). EXIF: 2026-05-11 14:00:54. Pendant flower buds visible, not yet open. Original filename spelled "japonica"; profile slug uses correct epithet "japonicus." GDD₃₂ estimated from Issaquah May 10: 2009.6 + ~25/day trend. Caption from filename. Batch caption workflow.

47.4918°N 122.0258°W (Issaquah, WA; 0.0 km from Issaquah station). EXIF: 2026-05-11 13:59:52. White flat-topped cymes at peak. GDD₃₂ estimated from Issaquah May 10: 2009.6 + ~25/day trend. Caption from filename. Batch caption workflow.

47.5731°N 122.1263°W (Bellevue, WA, Cougar Hills; 11.8 km from Issaquah station). EXIF: 2026-05-09 14:15:01. Double scarlet-pink flowers at peak. GDD₃₂ from Issaquah station. Caption from filename. Batch caption workflow.

47.5670°N 122.1321°W (Bellevue, WA, Eastgate; 11.6 km from Issaquah station). EXIF: 2026-05-01 17:26:45. Threadleaf cultivar in full leaf, narrow strap-like foliage fully expanded. GDD₃₂ from Issaquah station. Caption from filename. Batch caption workflow.

Kent, WA (47.380°N 122.201°W, 2.5 km from Kent station). First observation; small pink urn-shaped flowers open. Native PNW groundcover. GDD₃₂ estimated from Kent Apr 26: 1601.8 + ~22/day trend. Caption from filename. Batch caption workflow.

Kent, WA (47.380°N 122.197°W, 2.8 km from Kent station). First observation; fragrant white flowers opening. Evergreen shrub. GDD₃₂ estimated from Kent Apr 26: 1601.8 + ~22/day trend. Caption from filename. Batch caption workflow.

Kent, WA (47.380°N 122.197°W, 2.8 km from Kent station). Second observation for this species; prior was full leaf on 'Ancot' (Jun 14, 2023, Issaquah at 2539.5 GDD₃₂). New growth emerging from dormancy. GDD₃₂ estimated from Kent Apr 26: 1601.8 + ~22/day trend. Caption from filename. Batch caption workflow.

Kent, WA (47.379°N 122.202°W, 2.5 km from Kent station). First observation; new compound leaves emerging. One of the later deciduous trees to leaf out. GDD₃₂ estimated from Kent Apr 26: 1601.8 + ~22/day trend. Caption from filename. Batch caption workflow.

Kent, WA (47.376°N 122.202°W, 2.5 km from Kent station). First observation; bright green new growth flush on evergreen vine. Invasive in PNW. GDD₃₂ estimated from Kent Apr 26: 1601.8 + ~22/day trend. Caption from filename. Batch caption workflow.

Kent, WA (47.378°N 122.202°W, 2.5 km from Kent station). First observation; new leaves emerging on semi-evergreen groundcover. GDD₃₂ estimated from Kent Apr 26: 1601.8 + ~22/day trend. Caption from filename. Batch caption workflow.

Kent, WA (47.380°N 122.197°W, 2.8 km from Kent station). First observation; dark purple new foliage emerging on 'Monlo' (Diabolo). GDD₃₂ estimated from Kent Apr 26: 1601.8 + ~22/day trend. Caption from filename. Batch caption workflow.

Kent, WA (47.380°N 122.197°W, 2.8 km from Kent station). First observation; colorful new foliage emerging on compact cultivar. GDD₃₂ estimated from Kent Apr 26: 1601.8 + ~22/day trend. Caption from filename. Batch caption workflow.

Kent, WA (47.380°N 122.197°W, 2.8 km from Kent station). First observation; new leaves unfolding. Original filename misspelled "japinoca." GDD₃₂ estimated from Kent Apr 26: 1601.8 + ~22/day trend. Caption from filename. Batch caption workflow.

Kent, WA (47.380°N 122.202°W, 2.5 km from Kent station). First observation; new growth flush with violet-blue flowers open simultaneously. Evergreen groundcover. GDD₃₂ estimated from Kent Apr 26: 1601.8 + ~22/day trend. Caption from filename. Batch caption workflow.

Auburn, WA (47.339°N 122.163°W, 7.1 km from Kent station). 'Shishigashira' (Lion's Head Maple) showing new leaves. GDD₃₂ estimated from Kent Apr 24: 1558.7 + ~21/day trend. Caption from filename. Batch caption workflow.

Auburn, WA (47.339°N 122.160°W, 7.3 km from Kent station). New fronds emerging. GDD₃₂ estimated from Kent Apr 24: 1558.7 + ~21/day trend. Caption from filename. Batch caption workflow.

Auburn, WA (47.339°N 122.161°W, 7.2 km from Kent station). New growth flush on evergreen boxwood. GDD₃₂ estimated from Kent Apr 24: 1558.7 + ~21/day trend. Caption from filename. Batch caption workflow.

Auburn, WA (47.339°N 122.160°W, 7.3 km from Kent station). Native hazelnut showing new leaves. GDD₃₂ estimated from Kent Apr 24: 1558.7 + ~21/day trend. Caption from filename. Batch caption workflow.

Auburn, WA (47.339°N 122.163°W, 7.1 km from Kent station). In bloom, delicate spurred flowers. GDD₃₂ estimated from Kent Apr 24: 1558.7 + ~21/day trend. Caption from filename. Batch caption workflow.

Auburn, WA (47.339°N 122.160°W, 7.3 km from Kent station). Vegetative shoots emerging. No profile existed; stub created Apr 25, 2026. GDD₃₂ estimated from Kent Apr 24: 1558.7 + ~21/day trend. Caption from filename. Batch caption workflow.

Auburn, WA (47.339°N 122.163°W, 7.1 km from Kent station). New leaves emerging with flower buds forming. GDD₃₂ estimated from Kent Apr 24: 1558.7 + ~21/day trend. Caption from filename. Batch caption workflow.

Auburn, WA (47.339°N 122.162°W, 7.2 km from Kent station). Chartreuse cyathia in full bloom. GDD₃₂ estimated from Kent Apr 24: 1558.7 + ~21/day trend. Caption from filename. Batch caption workflow.

Auburn, WA (47.339°N 122.160°W, 7.3 km from Kent station). New leaves emerging from dormant crown. Large blue-green species. GDD₃₂ estimated from Kent Apr 24: 1558.7 + ~21/day trend. Caption from filename. Batch caption workflow.

Auburn, WA (47.339°N 122.162°W, 7.2 km from Kent station). First leaves unfolding on this late-leafing deciduous tree. GDD₃₂ estimated from Kent Apr 24: 1558.7 + ~21/day trend. Caption from filename. Batch caption workflow.

Auburn, WA (47.339°N 122.160°W, 7.3 km from Kent station). Native groundcover showing new heart-shaped leaves. No profile existed; stub created Apr 25, 2026. GDD₃₂ estimated from Kent Apr 24: 1558.7 + ~21/day trend. Caption from filename. Batch caption workflow.

Auburn, WA (47.340°N 122.160°W, 7.2 km from Kent station). Fully expanded clover-like leaves. GDD₃₂ estimated from Kent Apr 24: 1558.7 + ~21/day trend. Caption from filename. Batch caption workflow.

Auburn, WA (47.340°N 122.160°W, 7.2 km from Kent station). First flowers opening. GDD₃₂ estimated from Kent Apr 24: 1558.7 + ~21/day trend. Caption from filename. Batch caption workflow.

Auburn, WA (47.339°N 122.163°W, 7.1 km from Kent station). Flower buds swelling on bare branches. One of the later species to emerge. GDD₃₂ estimated from Kent Apr 24: 1558.7 + ~21/day trend. Caption from filename. Batch caption workflow.

Auburn, WA (47.339°N 122.162°W, 7.2 km from Kent station). 'Blue Diamond' hybrid rhododendron in full bloom. Compact variety with violet-blue flowers. GDD₃₂ estimated from Kent Apr 24: 1558.7 + ~21/day trend. Caption from filename. Batch caption workflow.

Auburn, WA (47.340°N 122.160°W, 7.3 km from Kent station). Native woodland wildflower in bloom. White petals (fresh bloom, not yet turned pink). GDD₃₂ estimated from Kent Apr 24: 1558.7 + ~21/day trend. Caption from filename. Batch caption workflow.

Auburn, WA (47.339°N 122.160°W, 7.3 km from Kent station). Fully expanded new fronds, bright green. Near Soos Creek Botanical Garden. GDD₃₂ estimated from Kent Apr 24: 1558.7 + ~21/day trend. Caption from filename. Batch caption workflow.

Kent area (47.372°N 122.170°W, 5.0 km from Kent station). Second bloom observation; prior was bloom start (Apr 19 at ~1410 GDD₃₂, Kent). Bracts fully expanded. GDD₃₂ estimated (Kent Apr 22: 1517.0 + ~22/day). Caption from filename. Batch caption workflow.

47.3722°N 122.1698°W (Kent, WA, 5.0 km from Kent station). Issaquah, WA (0.0 mi from station). Second observation; prior was new leaves (Apr 12 at 1308.4 GDD₃₂, Kent area). Now showing flower bud formation. GDD₃₂ estimated (Issaquah Apr 22: 1573.3 + ~23/day). Caption from filename. Batch caption workflow.

Kent area (47.372°N 122.170°W, 5.0 km from Kent station). First observation; var. inermis (thornless). New leaves emerging. GDD₃₂ estimated (Kent Apr 22: 1517.0 + ~22/day). Caption from filename. Batch caption workflow.

Kent area (47.372°N 122.170°W, 5.0 km from Kent station). First observation; new leaves emerging from buds. Fraxinus species are among the later trees to leaf out. GDD₃₂ estimated (Kent Apr 22: 1517.0 + ~22/day). Caption from filename. Batch caption workflow.

47.4918°N 122.0254°W (Issaquah, WA, 0.0 km from Issaquah station). Issaquah, WA (0.0 mi from station). Third apple observation; prior was pink bud on 'Red Jonagold'/'Chehalis'/'Liberty' (Apr 18, ~1385 GDD₃₂, Kent). Now at bloom start ~5 days later. GDD₃₂ estimated (Issaquah Apr 22: 1573.3 + ~23/day). Caption from filename. Batch caption workflow.

47.4917°N 122.0251°W (Issaquah, WA, 0.0 km from Issaquah station). Issaquah, WA (0.0 mi from station). Fourth observation; prior was late bloom (Apr 9 at ~1308 GDD₃₂). Now in vegetative growth phase, new leaves emerging post-bloom. GDD₃₂ estimated (Issaquah Apr 22: 1573.3 + ~23/day). Caption from filename. Batch caption workflow.

47.4918°N 122.0255°W (Issaquah, WA, 0.0 km from Issaquah station). Issaquah, WA (0.0 mi from station). Second observation for 'Otto Luyken'; prior was full bloom (Apr 20 at ~1509 GDD₃₂). Continued full bloom 3 days later. GDD₃₂ estimated (Issaquah Apr 22: 1573.3 + ~23/day). Caption from filename. Batch caption workflow.

47.4918°N 122.0237°W (Issaquah, WA, 0.1 km from Issaquah station). Issaquah, WA (0.0 mi from station). First observation; 'Smaragd' (Emerald Green) cultivar showing bright green new growth at branch tips. GDD₃₂ estimated (Issaquah Apr 22: 1573.3 + ~23/day). Caption from filename and EXIF. Batch caption workflow.

Issaquah, WA (0.0 mi from station). Second observation; prior was bud break (Apr 20 at ~1509 GDD₃₂). Progressed to new leaves over 3 days (~87 GDD₃₂ differential). Filename had 'Vitus' — corrected to Vitis. GDD₃₂ estimated (Issaquah Apr 22: 1573.3 + ~23/day). Caption from filename. Batch caption workflow.

EXIF: 2026-04-21 16:00:41, Kent area (47.358°N 122.105°W, 10.1 km from Kent station). First observation for this cultivar. 'Kwanzan' (syn. 'Kanzan') is the iconic double-flowered pink cherry. Caption from filename. Batch caption workflow.

EXIF: 2026-04-21 15:47:46, Kent area (3.1 mi from station). Flowers opening at leaf axils. Second observation for this species (leaf emergence Mar 22 at ~930 GDD₃₂). GDD₃₂ estimated (Kent Apr 19: 1440.9 + ~20/day × 2 days).

EXIF: 2026-04-20 17:21:56, Maple Valley (Lake Wilderness Arboretum) (7.7 mi from station). New leaves emerging on 'Nikko Blue'. Third H. macrophylla observation (with 'Variegata' same day and earlier Issaquah observation Apr 10 at 1337.2 GDD₃₂). GDD₃₂ estimated. Batch caption workflow.

EXIF: 2026-04-20 17:21:32, Maple Valley (Lake Wilderness Arboretum) (7.7 mi from station). New leaves emerging with white variegation on 'Variegata'. Second cultivar observation for this species today; 'Nikko Blue' also at same stage. GDD₃₂ estimated. Batch caption workflow.

EXIF: 2026-04-20 17:20:24, Maple Valley (Lake Wilderness Arboretum) (7.7 mi from station). First observation; new trifoliate leaves emerging. Native PNW woodland ground cover. GDD₃₂ estimated. Batch caption workflow.

EXIF: 2026-04-20 17:19:06, Maple Valley (Lake Wilderness Arboretum) (7.7 mi from station). First observation; new growth flush on native PNW understory shrub. GDD₃₂ estimated. Batch caption workflow.

47.4916°N 122.0261°W (Issaquah, WA, 0.0 km from Issaquah station). EXIF: 2026-04-20 17:18:27, Maple Valley (Lake Wilderness Arboretum) (7.7 mi from station). New leaves emerging on weeping dissectum-type cultivar 'Green Cascade'. GDD₃₂ estimated. Batch caption workflow.

EXIF: 2026-04-20 17:16:44, Maple Valley (Lake Wilderness Arboretum) (7.7 mi from station). First observation; small pink flowers in axillary racemes. Chinese species, compact grower. GDD₃₂ estimated. Batch caption workflow.

EXIF: 2026-04-20 17:15:10, Maple Valley (Lake Wilderness Arboretum) (7.7 mi from station). First observation; candle elongation on 'Blue Giant'. Five-needle pine. GDD₃₂ estimated. Batch caption workflow.

EXIF: 2026-04-20 17:14:29, Maple Valley (Lake Wilderness Arboretum) (7.7 mi from station). First observation; pink globular flower heads fully open. Native to maritime coastlines. GDD₃₂ estimated. Batch caption workflow.

EXIF: 2026-04-20 17:13:26, Maple Valley (Lake Wilderness Arboretum) (7.7 mi from station). First observation; red flowers open. Classic Aberconway hybrid (R. forrestii x R. griersonianum). GDD₃₂ estimated. Batch caption workflow.

47.4916°N 122.0261°W (Issaquah, WA, 0.0 km from Issaquah station). EXIF: 2026-04-20 17:10:45, Maple Valley (Lake Wilderness Arboretum) (7.7 mi from station). First observation; buds swelling but not yet broken. Late to leaf out for a maple; known for late dormancy break. GDD₃₂ estimated. Batch caption workflow.

EXIF: 2026-04-20 17:08:15, Maple Valley (Lake Wilderness Arboretum) (7.7 mi from station). First observation; new growth flush on dwarf cultivar 'Kenwith'. GDD₃₂ estimated. Batch caption workflow.

EXIF: 2026-04-20 17:07:08, Maple Valley (Lake Wilderness Arboretum) (7.7 mi from station). First observation; bright green new growth on bird's nest spruce 'Nidiformis'. GDD₃₂ estimated. Batch caption workflow.

EXIF: 2026-04-20 17:00:46, Maple Valley (Lake Wilderness Arboretum) (7.7 mi from station). First observation; double white star-shaped flowers fully open on 'Royal Star'. GDD₃₂ estimated. Batch caption workflow.

EXIF: 2026-04-20 16:59:15, Maple Valley (Lake Wilderness Arboretum) (7.7 mi from station). First observation; new leaves with cream margins on 'Marginata'. Caption misspelled as 'Sambucas'. GDD₃₂ estimated. Batch caption workflow.

EXIF: 2026-04-20 16:55:24, Maple Valley (Lake Wilderness Arboretum) (7.7 mi from station). First observation; bright golden-yellow new foliage emerging on 'Ogon' (syn. 'Gold Rush'). Deciduous conifer. GDD₃₂ estimated. Batch caption workflow.

EXIF: 2026-04-20 16:54:43, Maple Valley (Lake Wilderness Arboretum) (7.7 mi from station). First observation; yellow flowers open. Brooklyn Botanic Garden hybrid (M. acuminata x M. denudata). GDD₃₂ estimated. Batch caption workflow.

EXIF: 2026-04-20 16:53:42, Maple Valley (Lake Wilderness Arboretum) (7.7 mi from station). First observation; dark purple-red goblet flowers open on 'Nigra'. One of the darkest magnolia cultivars. GDD₃₂ estimated. Batch caption workflow.

EXIF: 2026-04-20 16:52:59, Maple Valley (Lake Wilderness Arboretum) (7.7 mi from station). First observation; full bloom. Yakushimanum hybrid with heavy indumentum. New stub profile created. GDD₃₂ estimated. Batch caption workflow.

EXIF: 2026-04-20 16:51:56, Maple Valley (Lake Wilderness Arboretum) (7.7 mi from station). First observation; new leaves emerging with characteristic pink-bronze coloring on 'Sem' (compact cultivar). Caption misspelled as 'Sobaria'. GDD₃₂ estimated. Batch caption workflow.

EXIF: 2026-04-20 16:49:54, Maple Valley (Lake Wilderness Arboretum) (7.7 mi from station). First observation; full bloom. Endemic to high elevations in Taiwan. Compact grower with indumentum. New stub profile created. GDD₃₂ estimated. Batch caption workflow.

EXIF: 2026-04-20 16:48:22, Maple Valley (Lake Wilderness Arboretum) (7.7 mi from station). First observation; new growth flush, typically bronze-red on new foliage. GDD₃₂ estimated. Batch caption workflow.

EXIF: 2026-04-20 16:47:01, Maple Valley (Lake Wilderness Arboretum) (7.7 mi from station). First observation; double white flowers fully open on 'Vestal'. European woodland native, spring ephemeral. New stub profile created. GDD₃₂ estimated. Batch caption workflow.

EXIF: 2026-04-20 16:43:41, Maple Valley (Lake Wilderness Arboretum) (7.7 mi from station). First observation; new leaves emerging. Has the largest simple leaves of any native North American tree (to 32 in). GDD₃₂ estimated. Batch caption workflow.

EXIF: 2026-04-20 16:42:45, Maple Valley (Lake Wilderness Arboretum) (7.7 mi from station). First observation; bottlebrush-like white flower spikes. Blooms before leaves fully emerge. GDD₃₂ estimated. Batch caption workflow.

EXIF: 2026-04-20 16:41:24, Maple Valley (Lake Wilderness Arboretum) (7.7 mi from station). First observation; leaves emerging from crown. 'Frances Williams' is a blue-green and gold variegated sport of H. sieboldiana 'Elegans'. Caption read 'Francis Williams' but correct spelling is 'Frances Williams'. New stub profile created. GDD₃₂ estimated. Batch caption workflow.

EXIF: 2026-04-20 16:40:46, Maple Valley (Lake Wilderness Arboretum) (7.7 mi from station). First observation; large specimen in full bloom. Mediterranean native, semi-hardy here. New stub profile created. GDD₃₂ estimated. Batch caption workflow.

EXIF: 2026-04-20 16:39:16, Maple Valley (Lake Wilderness Arboretum) (7.7 mi from station). First observation; flower panicle buds visible but not yet open on white cultivar 'Monroe'. GDD₃₂ estimated. Batch caption workflow.

EXIF: 2026-04-20 16:38:01, Maple Valley (Lake Wilderness Arboretum) (7.7 mi from station). First observation; flower buds visible on 'Bowl of Beauty' (Japanese type, anemone form). GDD₃₂ estimated. Batch caption workflow.

EXIF: 2026-04-20 16:36:42, Maple Valley (Lake Wilderness Arboretum) (47.380°N 122.040°W, 7.7 mi from Issaquah station). First observation; new leaves emerging from aromatic buds. GDD₃₂ estimated (Issaquah Apr 18: 1469.4 + ~20/day trend). Batch caption workflow.

47.4918°N 122.0257°W (Issaquah, WA, 0.0 km from Issaquah station). EXIF: 2026-04-20 08:39:11, Issaquah, WA (0.0 mi from station). Second observation for this species; progressed from leaf emerging + mature catkins (Apr 9 at ~1308 GDD₃₂) to expanded new leaves over 11 days (~201 GDD₃₂ differential). Batch caption workflow.

47.4916°N 122.0261°W (Issaquah, WA, 0.0 km from Issaquah station). EXIF: 2026-04-20 08:37:57, Issaquah, WA (0.0 mi from station). Second observation for this species; progressed from initial leaf emerging (Apr 9 at ~1308 GDD₃₂) to leaves unfolding over 11 days (~201 GDD₃₂ differential). Batch caption workflow.

47.4915°N 122.0261°W (Issaquah, WA, 0.0 km from Issaquah station). EXIF: 2026-04-20 08:37:30, Issaquah, WA (0.0 mi from station). First observation; native conifer showing bright green new growth at branch tips. Key PNW canopy species. GDD₃₂ estimated (Issaquah Apr 18: 1469.4 + ~20/day trend). Batch caption workflow.

47.4915°N 122.0259°W (Issaquah, WA, 0.0 km from Issaquah station). EXIF: 2026-04-20 08:37:13, Issaquah, WA (0.0 mi from station). Second observation for this cultivar; progressed from bud break (Apr 9 at ~1308 GDD₃₂) to new growth over 11 days (~201 GDD₃₂ differential). Batch caption workflow.

47.4914°N 122.0255°W (Issaquah, WA, 0.0 km from Issaquah station). EXIF: 2026-04-20 08:36:22, Issaquah, WA (0.0 mi from station). First observation; buds splitting with green tissue visible. One of the later deciduous trees to break bud here. GDD₃₂ estimated (Issaquah Apr 18: 1469.4 + ~20/day trend). Batch caption workflow.

47.4918°N 122.0243°W (Issaquah, WA, 0.1 km from Issaquah station). EXIF: 2026-04-20 08:30:15, Issaquah, WA (0.0 mi from station). First observation; native PNW shrub in bloom. Key early-season nectar source for native pollinators. GDD₃₂ estimated (Issaquah Apr 18: 1469.4 + ~20/day trend). Batch caption workflow.

47.4918°N 122.0252°W (Issaquah, WA, 0.0 km from Issaquah station). EXIF: 2026-04-20 08:29:21, Issaquah, WA (0.0 mi from station). Second observation for this cultivar; progressed from bud break (Mar 21 at 978.8 GDD₃₂) to full bloom over 30 days (~530 GDD₃₂ differential). Batch caption workflow.

EXIF: 2026-04-20 08:28:57, Issaquah, WA (0.0 mi from station). First observation; green tissue visible at bud tips. Originally captioned "Vitus sp." — confirmed as V. vinifera by observer. GDD₃₂ estimated (Issaquah Apr 18: 1469.4 + ~20/day trend). Batch caption workflow.

47.4917°N 122.0253°W (Issaquah, WA, 0.0 km from Issaquah station). EXIF: 2026-04-20 08:23:56, Issaquah, WA (0.0 mi from station). First observation; compact cultivar in full bloom. GDD₃₂ estimated (Issaquah Apr 18: 1469.4 + ~20/day trend). Batch caption workflow.

EXIF: 2026-04-19 12:39:00, Kent area (3.1 mi from Kent station). GDD₃₂ from Kent station Apr 18 (most recent confirmed). Flat-topped lacecap inflorescences forming, not yet open. Bloom expected within 1-2 weeks. Batch caption workflow.

EXIF: 2026-04-19 12:38:18, Kent area (3.1 mi from Kent station). GDD₃₂ from Kent station Apr 18 (most recent confirmed). First leaves emerging from buds. Nyssa is typically one of the later deciduous trees to leaf out here. Batch caption workflow.

EXIF: 2026-04-19 12:37:40, Kent area (3.1 mi from Kent station). GDD₃₂ from Kent station Apr 18 (most recent confirmed). Bracts expanding and showing white. Prior observation: bud swell at 1121.5 GDD₃₂ (Mar 22, Kent). Bloom approximately 28 days and ~289 GDD₃₂ after bud swell. Batch caption workflow.

EXIF: 2026-04-19 12:37:01, Kent area (3.1 mi from Kent station). GDD₃₂ from Kent station Apr 18 (most recent confirmed). Candle elongation beginning on dwarf mugo. Candle-pruning window opens when candles are 2/3 to fully elongated (typically late May here). Batch caption workflow.

EXIF: 2026-04-19 12:36:28, Kent area (3.1 mi from Kent station). GDD₃₂ from Kent station Apr 18 (most recent confirmed; Apr 19 data pending daily capture). 'Hino-Crimson' is a Kurume hybrid evergreen azalea. Full bloom with crimson flowers fully open. Batch caption workflow.

EXIF: 2026-04-13 08:50:16, Issaquah, WA (0.0 mi from station). Second observation for this species; first bloom was ~Mar 14 at ~864 GDD₃₂ (Issaquah). Leaf emergence ~529 GDD₃₂ after bloom. NPN threshold for leaf emergence is 1364 GDD₃₂ — observed at 1392.7, within ~2%. GDD₃₂ from Issaquah station. Batch caption workflow.

EXIF: 2026-04-12 18:04:47, south King County (47.2036°N 122.0146°W, 16.0 mi from Kent station). First observation; new flowers opening on 'Spring Bouquet' cultivar. Kent station closest but 16 mi distant; GDD₃₂ may have local variance. Batch caption workflow.

EXIF: 2026-04-12 12:34:05, Kent area (47.3718°N 122.1704°W, 3.1 mi from station). First observation; new growth flush visible at branch tips. GDD₃₂ from Kent station. Batch caption workflow.

EXIF: 2026-04-12 12:33:56, Kent area (47.3717°N 122.1702°W, 3.1 mi from station). First observation; new leaves emerging on yellow-twig cultivar. GDD₃₂ from Kent station. Batch caption workflow.

EXIF: 2026-04-10 16:26:14, Issaquah, WA (0.0 mi from station). First observation; new leaves emerging from dormant stems. GDD₃₂ from Issaquah station. Batch caption workflow.

EXIF: 2026-04-09 16:52:09, Kent area (47.3799°N 122.1692°W, 3.1 mi east of Kent station). Second observation for this species; progressed from early bloom (Mar 21 Kent at ~915 GDD₃₂) to full bloom over 19 days (~327 GDD₃₂ differential). Yellow racemes fully open, stamens exposed. Profile now lives in berberis-aquifolium.md per current taxonomy. GDD₃₂ estimated from Kent Apr 8: 1223.9 + ~18/day trend. Batch caption workflow.

EXIF: 2026-04-09 16:51:35, Kent area (47.3803°N 122.1696°W, 3.1 mi east of Kent station). First observation; bright lime-green new needle growth emerging at branch tips on mature tree. Pendulous habit visible. GDD₃₂ estimated from Kent Apr 8: 1223.9 + ~18/day trend. Batch caption workflow.

EXIF: 2026-04-09 16:50:40, Kent area (47.3804°N 122.1700°W, 3.1 mi east of Kent station). First observation; terminal flower buds visibly swelling and beginning to show color. Native evergreen rhododendron, WA state flower. Ahead of NPN first-bloom threshold (1906 GDD₃₂). GDD₃₂ estimated from Kent Apr 8: 1223.9 + ~18/day trend. Batch caption workflow.

EXIF: 2026-04-09 16:50:04, Kent area (47.3806°N 122.1700°W, 3.1 mi east of Kent station). First observation; small new leaves unfolding at branch tips on clonal aspen. Leaf emergence ahead of typical NPN threshold (1417 GDD₃₂) — observed here at ~1242. GDD₃₂ estimated from Kent Apr 8: 1223.9 + ~18/day trend. Batch caption workflow.

EXIF: 2026-04-09 09:35 AM, Issaquah, WA (0.0 mi from station). First observation; evergreen conifer showing subtle bud break with new foliage emerging. Low-growing cultivar. Batch caption workflow.

EXIF: 2026-04-09 09:35 AM, Issaquah, WA (0.0 mi from station). First observation; new growth expanding on hybrid viburnum. Earlier flowering phase (fragrant winter blooms Jan-Mar) now transitioning to foliage development. Batch caption workflow.

EXIF: 2026-04-09 09:34 AM, Issaquah, WA (0.0 mi from station). First observation; vigorous new foliage on canes. Invasive species showing aggressive spring growth. Batch caption workflow.

EXIF: 2026-04-09 09:34 AM, Issaquah, WA (0.0 mi from station). First observation; native Pacific Northwest shrub in early to mid-bloom, clusters of white bell-shaped flowers opening. Batch caption workflow.

EXIF: 2026-04-09 09:33 AM, Issaquah, WA (0.0 mi from station). First observation; native evergreen fern showing spring frond flush. Fiddleheads tightly coiled, beginning to unfurl. Batch caption workflow.

EXIF: 2026-04-09 09:32 AM, Issaquah, WA (0.0 mi from station). Third observation for this species; progressed from full bloom (Mar 20 at 958.6 GDD₃₂) to late bloom over 20 days (~350 GDD₃₂). Flowers fading, some petal drop. Batch caption workflow.

EXIF: 2026-04-09 09:31 AM, Issaquah, WA (0.0 mi from station). First observation; new foliage emerging from dormant crowns. No profile existed; stub created Apr 9, 2026. Medium hosta with dark green leaves and white margins. Batch caption workflow.

EXIF: 2026-04-09 09:30 AM, Issaquah, WA (0.0 mi from station). First observation; native tree showing synchronized leaf and catkin maturity. Yellow pollen-bearing catkins fully extended. Batch caption workflow.

EXIF: 2026-04-09 09:28 AM, Issaquah, WA (0.0 mi from station). Second observation for this cultivar; progressed from bud break (Mar 20 at 958.6 GDD₃₂) to leaf emergence (20 days, ~350 GDD₃₂ differential). 'Crimson Queen' form based on location match with prior observation. Batch caption workflow.

EXIF: 2026-04-09 09:27 AM, Issaquah, WA (0.0 mi from station). First observation; early leaf emergence for this native understory shrub. Batch caption workflow.

EXIF: 2026-04-09 09:24 AM, Issaquah, WA (0.0 mi from station). Second observation for this species; progressed from bud break (Apr 6 at 1254.3 GDD₃₂) to flower bud opening in 3 days. Catkins elongating. Batch caption workflow.

EXIF: 2026-04-07 08:39:35, Issaquah, WA (0.0 mi from station). Flower buds forming on panicle, purple-tinged. New leaves expanding. Batch caption workflow.

EXIF: 2026-04-07 08:38:54, Issaquah, WA (0.0 mi from station). Vigorous new compound leaves expanding from thorny canes. Ivy groundcover visible. Batch caption workflow.

EXIF: 2026-04-06 12:11:33, Issaquah, WA (0.0 mi from station). Large sticky buds cracking open, bright green leaf tissue emerging. Key native canopy species. Batch caption workflow.

EXIF: 2026-04-02 13:59:39, Issaquah, WA (0.0 mi from station). Small leaves emerging from buds on bare branch. Batch caption workflow.

EXIF: 2026-04-02 13:58:54, Issaquah, WA (0.0 mi from station). Pink bud clusters visible, not yet open. Wet foliage. Batch caption workflow.

EXIF: 2026-03-28 18:14:35, 47.3849°N 122.2347°W (Kent, 0.3 mi from station). Leaves emerging with flower buds visible. Second observation for this species (first: 'Crimson Pygmy' Mar 21 Kent at ~915 GDD₃₂). Same station, ~108 GDD₃₂ later; difference likely reflects cultivar variation ('Golden Ruby' vs 'Crimson Pygmy'). GDD₃₂ estimated (Kent Mar 27: 1009.4 + ~14/day trend).

EXIF: 2026-03-28 18:13:11, 47.3846°N 122.2352°W (Kent, 0.3 mi from station). Bright chartreuse-yellow new leaves emerging, contrasting with mature dark green variegated foliage. GDD₃₂ estimated (Kent Mar 27: 1009.4 + ~14/day trend).

EXIF: 2026-03-27 10:42:22, Issaquah, WA (0.0 mi from station). Bright green new leaves expanding; small red flower bud visible at center of leaf whorl. Evergreen azalea preparing to bloom. GDD₃₂ estimated (Issaquah Mar 26: 1061.7).

EXIF: 2026-03-26 18:23:51, Kent area (3.1 mi from station). White flowers opening with pink buds still present; new leaves emerging simultaneously (synanthous). Early bloom stage. GDD₃₂ estimated (Kent Mar 25: 983.1).

EXIF: 2026-03-26 14:47:09, WA State Capitol Campus, Olympia (Olympia station, 0.2 mi). Heavy white bloom on bare branches framing the capitol dome. Second full bloom observation for this species (first: Kent area Mar 21 at ~915 GDD₃₂). Olympia ~73 GDD₃₂ behind Kent at same event, consistent with cooler south Sound climate. Photo credit: B. Welch. GDD₃₂ estimated (Olympia Mar 25: 987.6).

EXIF: 2026-03-23 11:07:07, 47.4916°N 122.0259°W (Issaquah, ~1.4 mi from station). Pink semi-double flower with exposed yellow stamens; additional buds visible. March bloom consistent with C. japonica (typical Feb-Apr in 8b). GDD₃₂ from Issaquah station. Originally reported as C. sasanqua; corrected to C. japonica based on bloom timing.

EXIF: 2026-03-22 12:52:52, Kent area (3.0 mi from station). Inflorescence buds swelling on spur wood. GDD₃₂ estimated (Kent Mar 21: 929.7).

EXIF: 2026-03-22 12:52:19, Kent area (3.0 mi from station). New leaves emerging. GDD₃₂ estimated (Kent Mar 21: 929.7).

EXIF: 2026-03-22 12:38:41, Kent area (3.1 mi from station). Large globular inflorescence buds visibly swelling on bare branches, not yet opening. GDD₃₂ estimated (Kent Mar 21: 929.7, today's not yet captured).

EXIF: 2026-03-22 12:36:41, Kent area (3.1 mi from station). Early buds starting to move on bare branches. Persistent haws from last season still attached. Background shows neighboring trees in bloom. GDD₃₂ estimated (Kent Mar 21: 929.7).

EXIF: 2026-03-21 11:06:38, Kent area (4.8 mi from station). Small deep-red leaves and flower buds emerging simultaneously along thorny stems. Synanthous. GDD₃₂ estimated (Kent Mar 19: 914.8).

EXIF: 2026-03-21 11:06:30, Kent area (4.8 mi from station). Bright chartreuse-gold new leaves emerging along bare stems. GDD₃₂ estimated (Kent Mar 19: 914.8).

EXIF: 2026-03-21 11:06:30, Graham, WA (Tacoma station, 14.0 mi). EXIF GPS unreliable (showed Covington area); actual location confirmed as Graham by observer. Dense golden-yellow flowers covering stems. Key phenological indicator species: forsythia bloom signals crabgrass pre-emergent window and other pest emergence thresholds.

EXIF: 2026-03-21 11:03:49, Kent area (4.8 mi from station). Heavy bloom on bare branches, no leaves yet. White-pink single flowers. Two photos (IMG_3398 close-up, IMG_3400 canopy). GDD₃₂ estimated (Kent Mar 19: 914.8).

EXIF: 2026-03-21 11:03:33, Kent area (4.8 mi from station). Bright green new leaves emerging among winter-purpled older foliage. GDD₃₂ estimated (Kent Mar 19: 914.8, today's not yet captured).

EXIF: 2026-03-21 11:03:15, Kent area (4.8 mi from station). Yellow flower clusters opening among winter-tinted foliage. GDD₃₂ estimated (Kent Mar 19: 914.8, today's not yet captured).

EXIF: 2026-03-21 10:11:04, Issaquah, WA. Very early bud break for Asian pear cultivar. Using Mar 20 cumulative GDD₃₂ (978.8); Mar 21 daily data pending weather capture.

EXIF: 2026-03-20 08:33:01, Issaquah, WA. Elongated buds splitting, green tips visible.

EXIF: 2026-03-20 08:32:46, Issaquah, WA. Early bud break on laceleaf cultivar.

EXIF: 2026-03-20 08:31:49, Issaquah, WA. Heavy drooping panicles fully open, white urn-shaped flowers. Last year's seed capsules still visible.

Leaves just emerging. GDD₃₂ estimated (Mar 18: 937.4 + ~20/day trend).

Started blooming 2 days ago as of Mar 19. No profile yet for this cultivar.

Leaf push starting in last 3 days as of Mar 19. Conversion file predicts first bloom at 973 GDD₃₂ / Mar 25 - leaf push before bloom is consistent.

Started blooming this week as of Mar 19. Key PNW native indicator species.

Started blooming in the last 6 days as of Mar 19. Midpoint ~Mar 14. Conversion file predicted 552 GDD₃₂ / Feb 22 - was 35% low.

EXIF: 2026-01-22 11:15:10, Issaquah, WA. Deep red flowers, classic winter bloom.

Issaquah, WA (47.492°N 122.025°W, 0.1 km from Issaquah station). Historical observation. .

EXIF: 2025-07-17 06:48:11, Issaquah, WA. GDD₃₂ from Kent (no Issaquah 2025 data).

Kent area (47.380°N 122.173°W, 3.0 mi from Kent station). Historical observation. New growth flush on native conifer. GDD₃₂ from Kent station. Caption from filename. Batch caption workflow.

Seattle, WA (Washington Park Arboretum (UW Botanic Gardens), 47.6380°N 122.2964°W). EXIF: 2025-05-09 13:00:45, Seattle area (2.0 km from Seattle station). First observation for this species. 'Concordia' is a golden-leaved cultivar. Caption from filename (no EXIF ImageDescription). Historical observation.

EXIF: 2025-05-06 18:48:47, Kent area (47.384°N 122.176°W, 4.5 km from Kent station). Historical observation. Full leaf on native understory tree. GDD₃₂ from Kent station. Caption from filename. Batch caption workflow.

EXIF: 2023-08-21 16:20:20, GPS: 46.874°N 121.516°W (Mt. Rainier area, ~78 km from nearest station). Historical observation. Fruit present on native elderberry. GDD₃₂ from Kent station but unreliable at this distance and elevation; actual GDD₃₂ likely significantly lower. Caption from filename. Batch caption workflow. [VERIFY] GDD accuracy.

47.4918°N 122.0257°W (Issaquah, WA, 0.0 km from Issaquah station). EXIF: 2023-07-11 08:48:12, Issaquah, WA (0.0 mi from station). Historical observation. Compact reblooming cultivar in full flower. GDD₃₂ from Issaquah station. Caption from filename. Batch caption workflow.

47.4915°N 122.0258°W (Issaquah, WA, 0.0 km from Issaquah station). EXIF: 2023-06-14 16:15:40, Issaquah, WA (0.0 mi from station). Historical observation. Chartreuse-gold foliage on 'Ancot' (Golden Spirit). GDD₃₂ from Issaquah station. Caption from filename. Batch caption workflow.

47.4916°N 122.0258°W (Issaquah, WA, 0.0 km from Issaquah station). EXIF: 2023-06-14 16:15:06, Issaquah, WA (0.0 mi from station). Historical observation. Bracts fully open. GDD₃₂ from Issaquah station. Caption from filename. Batch caption workflow.

47.4916°N 122.0259°W (Issaquah, WA, 0.0 km from Issaquah station). EXIF: 2023-06-14 16:14:43, Issaquah, WA (0.0 mi from station). Historical observation. Flower panicles forming, not yet open. GDD₃₂ from Issaquah station. Caption from filename (misspelled "quiercifolia" in original). Batch caption workflow.

47.4916°N 122.0257°W (Issaquah, WA, 0.0 km from Issaquah station). EXIF: 2023-04-25 16:02:06, Issaquah, WA (0.0 mi from station). Historical observation. Full bloom on native PNW indicator species. GDD₃₂ from Issaquah station. Caption from filename. Batch caption workflow.

47.4915°N 122.0256°W (Issaquah, WA, 0.0 km from Issaquah station). EXIF: 2022-11-11 12:56:54, Issaquah, WA (0.0 mi from station). Historical observation. Fall foliage on 'Vanessa' cultivar. GDD₃₂ from Issaquah station (end of season accumulation). Caption from filename. Batch caption workflow.

Issaquah, WA (47.492°N 122.025°W, 0.0 km from Issaquah station). Historical observation. Fall color on red maple. GDD₃₂ from Issaquah station. Caption from filename. Batch caption workflow.

47.4916°N 122.0258°W (Issaquah, WA, 0.0 km from Issaquah station). EXIF: 2022-06-29 14:57:06, Issaquah, WA (0.0 mi from station). Historical observation. Full bloom, bracts fully expanded. GDD₃₂ from Issaquah station. Caption from filename. Batch caption workflow.