Photo by Melody

PlantFiles: Rock Cress, Aubretia
Aubrieta deltoidea

Family: Brassicaceae (brass-ih-KAY-see-ee) (Info)
Genus: Aubrieta (aw-bree-EH-tuh) (Info)
Species: deltoidea (del-TOY-dee-uh) (Info)

Synonym:Alyssum deltoideum

One vendor has this plant for sale.

12 members have or want this plant for trade.

Alpines and Rock Gardens

6-12 in. (15-30 cm)

18-24 in. (45-60 cm)

USDA Zone 4a: to -34.4 C (-30 F)
USDA Zone 4b: to -31.6 C (-25 F)
USDA Zone 5a: to -28.8 C (-20 F)
USDA Zone 5b: to -26.1 C (-15 F)
USDA Zone 6a: to -23.3 C (-10 F)
USDA Zone 6b: to -20.5 C (-5 F)
USDA Zone 7a: to -17.7 C (0 F)
USDA Zone 7b: to -14.9 C (5 F)
USDA Zone 8a: to -12.2 C (10 F)
USDA Zone 8b: to -9.4 C (15 F)
USDA Zone 9a: to -6.6 C (20 F)
USDA Zone 9b: to -3.8 C (25 F)

Sun Exposure:
Sun to Partial Shade

Unknown - Tell us

Bloom Color:
Dark Blue

Bloom Time:
Mid Spring


Other details:
Average Water Needs; Water regularly; do not overwater
This plant is attractive to bees, butterflies and/or birds

Soil pH requirements:
6.1 to 6.5 (mildly acidic)
6.6 to 7.5 (neutral)
7.6 to 7.8 (mildly alkaline)

Patent Information:

Propagation Methods:
By dividing the rootball
From softwood cuttings
From seed; direct sow outdoors in fall
From seed; winter sow in vented containers, coldframe or unheated greenhouse
From seed; sow indoors before last frost
From seed; direct sow after last frost
By simple layering

Seed Collecting:
Allow pods to dry on plant; break open to collect seeds
Properly cleaned, seed can be successfully stored

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By jody
Thumbnail #1 of Aubrieta deltoidea by jody

By Weezingreens
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There are a total of 9 photos.
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1 positive
3 neutrals
No negatives

Gardeners' Notes:

Neutral mehitabel45 On Oct 27, 2013, mehitabel45 from Whidbey Island, WA (Zone 8b) wrote:

This is a very common ground cover on the many walls of the northeast and the northwest. Most people just plant it and forget about it. They shouldn't.

I really like the gorgeous blanket of purple flowers in late April and most of May, but in the summer, after it's done blooming, the foliage just dries up and leaves a mess.
If I cut it back, it comes back in the fall for a while. It creeps along, and makes a nice mat, but the trimming gets old.

Positive Weezingreens On Oct 5, 2002, Weezingreens from Seward, AK (Zone 3b) wrote:

Aubrieta x cultorum, or A. deltoidea is a wonderful rock garden plant. Much like arabis, it forms lovely green mounds, producing bright flowers in mid-spring. Though less hardy than arabis in our Zone 3, it offers several intense color options.

Neutral eyesoftexas On Aug 30, 2001, eyesoftexas from Toadsuck, TX (Zone 7a) wrote:

This is one of the best known rock garden plants, well suited for covering large areas, and for trailing over walls.
It is also useful as an edging to paths and for combining with other Herbaceous plants.

Cultivation: Well drained garden soil and a sunny position suit it best. Kee plants neat by trimming them after flowering.

Proagation: Lift and divide in early Autumn.

Neutral jody On May 11, 2001, jody from MD &, VA (Zone 7b) wrote:

Easy to grow in cool-temeperate climates. They are short lived and cuttings should be taken every 3-4 years. They are readily propagated also by division of the rhizomatous rootstock. Mat forming greenish gray leaves and masses of starry muave pink flowers in spring.


This plant has been said to grow in the following regions:

Merced, California
Fruita, Colorado
Loganville, Georgia
Logansport, Indiana
Westbrook, Maine
Minneapolis, Minnesota
Grand Forks, North Dakota
Bend, Oregon
Gold Hill, Oregon
Hereford, Texas
Freeland, Washington
Poulsbo, Washington

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