Dwarf Periwinkle
Vinca minor
Apocynaceae · vine groundcover · introduced
Last updated
Dwarf periwinkle is a broadleaf groundcover from central and southern Europe with prostrate, stoloniferous growth. It produces solitary lavender-blue flowers and has dark green, coarse foliage that forms dense mats.
Dwarf periwinkle is hardy in zones 5a-8b and prefers part shade with adaptable, low-moisture soil (pH 5.5-7.7). Growth is moderate with medium maintenance and exceptional shade, drought, and erosion tolerance. It spreads via stolons and is useful for naturalization, though it has weed potential in some regions.
Quick Facts
Field Observations
Phenological Calendar
As of May 18, 2026, Puget Sound stations range from 2022.7 to 2224.5 GDD₃₂. Dwarf Periwinkle has passed bloom start (1624 GDD₃₂).
Regional Season Tracker
GDD₃₂ accumulation across 7 Puget Sound stations · as of May 18, 2026| Station | GDD₃₂ | Current Stage | Next | To Go |
|---|---|---|---|---|
| Issaquah / East King | 2,225 | Bloom start | — | — |
| Kent / Auburn | 2,194 | Bloom start | — | — |
| Seattle / UW | 2,164 | Bloom start | — | — |
| Olympia / Tumwater | 2,128 | Bloom start | — | — |
| Bellingham / Whatcom | 2,098 | Bloom start | — | — |
| Tacoma / Puyallup | 2,092 | Bloom start | — | — |
| Sequim / Rain Shadow | 2,023 | Bloom start | — | — |
| Stage | GDD32 | Typical Window |
|---|---|---|
| New growth flush BBCH 11 | 1624 | Late April |
| ● Bloom start BBCH 61 NOW | 1624 | Late April |
| Bloom end / petal fall BBCH 69 | — | Jun 15-Jul 15 |
Source: 'Field observation, Kent, WA, 2026-04-27' About GDD₃₂ →
Season tracker for Kent / Auburn as of May 18, 2026. Predicted dates use 16-day weather forecast through Jun 3, 2026, then climate normals.