Western Dogwood
Cornus sericea subsp. occidentalis
Ericaceae · broadleaf deciduous shrub · native
Last updated
Plant Profile
Size & Form
Height
5 ft
Growth Rate
Moderate
Size at 20 yr
5 ft
Lifespan
Moderate
Site Requirements
Light
Full Sun
Soil Drainage
Wet Tolerant
Soil pH
4.8-7.5
Water
Moderate
Drought Tolerance
Medium
Hardiness
Zones 3b–9b
Ornamental Interest
Bloom Time
May to June
Origin
Pacific Northwest native
Watch for this season
Powdery MildewHigh
Active Conidial Spread
Oystershell scaleHigh
Crawler Emergence
Anthracnose (Shade Trees)Moderate
Active Infection & Secondary Spread
Armillaria Root RotModerate
Active Below-ground Growth
+ 2 more — see full disease and pest lists below
Diseases: Regionally Documented (7)
Discula destructiva (dogwood), Kabatiella and Discula spp... Anthracnose Multiple obligate biotrophic fungi (Erysiphales: Erysipha... Powdery Mildew Collar Rot Armillaria spp. — primarily A Armillaria Root Rot Symptom category — not a single disease Branch Canker Symptom category — not a single disease Leaf Spot Symptom category — not a single disease Root Rot
Pests: Regionally Documented (6)
Phenological Calendar
View full calendar (7 stages)
| Stage | Typical Window |
|---|---|
| Bud break BBCH 07 | Feb 15-Mar 15 |
| Leaf emergence BBCH 11 | Mar 1-Apr 1 |
| Bloom start BBCH 61 | Mar 15-May 15 |
| Bloom end / petal fall BBCH 69 | Apr 15-May 31 |
| Fruit/seed development BBCH 71 | Jun 1-Aug 31 |
| Fall color / leaf senescence BBCH 93 | Oct 1-Nov 15 |
| Dormancy BBCH 97 | Nov 15-Feb 28 |
Data Maturity Structured Multiple sources. Expert review underway.