Mountain Alyssum
Alyssum wulfenianum

Family: Brassicaceae (brass-ih-KAY-see-ee) (Info)
Genus: Alyssum (al-ISS-um) (Info)
Species: wulfenianum (wulf-en-ee-AY-num) (Info)

Category:

Alpines and Rock Gardens

Perennials

Height:

under 6 in. (15 cm)

6-12 in. (15-30 cm)

Spacing:

Unknown - Tell us

Hardiness:

USDA Zone 3a: to -39.9 C (-40 F)

USDA Zone 3b: to -37.2 C (-35 F)

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:

Full Sun

Danger:

Unknown - Tell us

Bloom Color:

Bright Yellow

Bloom Time:

Mid Spring

Late Spring/Early Summer

Foliage:

Grown for foliage

Evergreen

Deciduous

Silver/Gray

Velvet/Fuzzy-Textured

Other details:

Drought-tolerant; suitable for xeriscaping

This plant is resistant to deer

Provides winter interest

Soil pH requirements:

Unknown - Tell us

Patent Information:

Non-patented

Propagation Methods:

Unknown - Tell us

Seed Collecting:

Unknown - Tell us

Regional

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

Wasilla, Alaska

Gardeners' Notes:

1
positive
1
neutral
0
negatives
RatingContent
Neutral

On Feb 13, 2015, coriaceous from ROSLINDALE, MA wrote:

An alpine that does not like hot humid summers where the night temperature often remains above 70F, as in the southeastern US south of Z6/7.

Blooms for an exceptionally long time, into early summer here.

Positive

On Nov 11, 2008, altagardener from Calgary, AB (Zone 3b) wrote:

An evergreen ground cover that is native to the southeastern Alps. Ranges from completely prostrate to about 5 inches high, with bright yellow mustard-like blooms on long brittle stems. Blooms throughout the season, from extremely early to extremely late. Extremely hardy, perennial down to at least zone 3; can be relatively short-lived (though self-seeding), with individual plants lasting 2 to 10 years.