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 Lilacbush (Aubrieta deltoidea)

Picture of a Lilacbush Subshrub
Lilacbush, Rock Cress (Aubrieta deltoidea)

Lilacbush is a Subshrub and is ideal for use in rock gardens. The flowers of cultivated varieties are available in pink, violet, white, lavender, rose, lilac and more often as a mixture. This Subshrub is native to southeastern Europe, but grown worldwide as an ornamental landscape Subshrub, or rock garden plant, or Alpine shrub.

Lilacbush, Rock Cress is ideal for use in rock gardens, as it is a low spreading shrub, evergreen and hardy perennial. It prefers light well drained soil, and is tolerant of a wide pH range, and can grow in partial shade or full sun. It is also attractive to bees and other insects such as butterflies.

Facts about the Aubrieta deltoidea Species of Shrubs
  • Genus & Species Scientific Name = Aubrieta deltoidea
  • Common Names = Lilacbush, Rock Cress, Purple Rock Cress, Rainbow Rock Cress
  • Other names; some mistake this shrub for Alyssum deltoideum
Lilacbush Shrub Growth Details

Mature Height : 6-12" (15-30cm)
Mature Spread : 18-24" (45-60cm)
Mature Form : Ground Cover
Growth Rate : Medium - Fast
Sun Exposure : Full sun, partial shade.
Soil Moisture : Moderate
Soil Type : Will grow in all types except heavily acidic soils
Soil pH : 6.1 - 8.5
Flower Color : Violet, Lavender
Flowering Time : Mid spring
Foliage Color : Green
Hardiness Zones : 4-9

Lilacbush will grow in the following North American hardiness zones;

Zone 4a, -30 to -25 F, -31.7 to -34.4 C
Zone 4b, -25 to -20 F, -28.9 to -31.6 C
Zone 5a, -20 to -15 F, -26.2 to -28.8 C
Zone 5b, -15 to -10 F, -23.4 to -26.1 C
Zone 6a, -10 to -5 F, -20.6 to -23.3 C
Zone 6b, -5 to 0 F, -17.8 to -20.5 C
Zone 7a, 0 to 5 F, -15.0 to -17.7 C
Zone 7b, 5 to 10 F, -12.3 to -14.9 C
Zone 8a, 10 to 15 F, -9.5 to -12.2 C
Zone 8b, 15 to 20 F, -6.7 to -9.4 C
Zone 9a, 20 to 25 F, -3.9 to -6.6 C
Zone 9b, 25 to 30 F, -1.2 to -3.8 C

 

   

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