European grape
Shoot growthVitis vinifera
Vitaceae · vine groundcover · introduced
Last updated
Plant Profile
Size & Form
Height
15-30 ft
Spread
6-10 ft (managed on trellis)
Growth Rate
Fast
Lifespan
Long-lived
Site Requirements
Light
Full Sun
Soil Drainage
Well Drained
Soil pH
5.5-7.5
Water
Low
Drought Tolerance
Medium
Hardiness
Zones 6–10
Ornamental Interest
Bloom Time
June
Fall Color
Yellow, red, purple
Origin
Mediterranean region, Central Europe, southwestern Asia
Field Observations
Wine Grape: New leaves
April 23, 2026 · Issaquah
Wine Grape: Bud break
April 20, 2026 · Issaquah
Watch for this season
Powdery MildewHigh
Active Conidial Spread
Downy MildewModerate
Late Spring - Summer Transition
Diseases: Regionally Documented (3)
Pests: Regionally Documented (4)
Phenological Calendar
As of June 4, 2026, Puget Sound stations range from 2458.5 to 2700.8 GDD₃₂. European grape has passed shoot growth (1596 GDD₃₂).
Regional Season Tracker
GDD₃₂ accumulation across 7 Puget Sound stations · as of Jun 4, 2026| Station | GDD₃₂ | Current Stage | Next | To Go |
|---|---|---|---|---|
| Issaquah / East King | 2,701 | Shoot growth | — | — |
| Kent / Auburn | 2,695 | Shoot growth | — | — |
| Seattle / UW | 2,637 | Shoot growth | — | — |
| Olympia / Tumwater | 2,598 | Shoot growth | — | — |
| Tacoma / Puyallup | 2,564 | Shoot growth | — | — |
| Bellingham / Whatcom | 2,560 | Shoot growth | — | — |
| Sequim / Rain Shadow | 2,459 | Shoot growth | — | — |
View full calendar (7 stages)
| Stage | GDD32 | Typical Window |
|---|---|---|
| Bud break BBCH 07 | — Observed | Mar 15-Apr 15 |
| ● Shoot growth BBCH 15 NOW | 1596 Observed | Apr 15-May 15 |
| Bloom BBCH 65 | — | Jun 1-Jun 30 |
| Fruit set BBCH 71 | — | Jun 15-Jul 15 |
| Veraison BBCH 83 | — | Aug 1-Sep 1 |
| Harvest maturity BBCH 89 | — | Sep 1-Oct 15 |
| Leaf senescence BBCH 93 | — | Oct 15-Nov 15 |
Source: Field observation, Issaquah, WA, 2026-04-23 About GDD₃₂ →
Season tracker for Kent / Auburn as of Jun 4, 2026. Predicted dates use 16-day weather forecast through Jun 20, 2026, then climate normals.
Cultivars (2)
'Interlaken'
Seedless table grape. Early ripening; reliable in western WA. Sweet, golden-green fruit.
Good choice for Puget Sound home gardens
'Canadice'
Seedless table grape. Red, very sweet, early ripening.
Data Maturity Structured Multiple sources. Expert review underway.