Asperula boissieri-Woodruff

USDA Hardiness Zones: 3

Light: Full sun

Mature Size: 3–6" tall | up to 12" wide

Attracts: Pollinators

Bloom Time: Early summer

Water Needs: Low once established; drought tolerant

Soil: Gritty, sharply drained rocky soils

Growth Habit: Tight, cushion-forming to mat-forming evergreen perennial

Flowers: Small soft pink funnel-shaped blooms held close to the foliage in early summer

Ideal For: Rock gardens, alpine plantings, crevice gardens, troughs, dry rocky sites

Evergreen: Yes

Why We Love It:
This uncommon alpine perennial forms a dense blue-gray cushion of narrow silvery foliage that looks beautifully sculpted among stone and gravel. Adapted to harsh mountain conditions, it thrives in dry sunny sites where drainage is excellent and moisture remains limited. Its refined texture and delicate pink blooms bring subtle detail and seasonal interest to alpine gardens without overwhelming surrounding plants.

Additional Info:
Native to limestone mountain regions of southern Greece and best suited to sharply drained alpine or crevice-style plantings. Requires gritty soils and should be protected from excessive winter moisture. Rare and collectible, it performs especially well in trough gardens, scree plantings, and detailed rock garden settings where its compact form can be appreciated up close.