Lithodora
Lithodora diffusa 'White Star'

Family: Boraginaceae
Genus: Lithodora (lith-oh-DOR-uh) (Info)
Species: diffusa (dy-FEW-sa) (Info)
Cultivar: White Star
Additional cultivar information:(PP20078)
Hybridized by Takao
Registered or introduced: 2008

Category:

Alpines and Rock Gardens

Groundcovers

Perennials

Height:

6-12 in. (15-30 cm)

Spacing:

12-15 in. (30-38 cm)

Hardiness:

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)

Sun Exposure:

Full Sun

Sun to Partial Shade

Danger:

Handling plant may cause skin irritation or allergic reaction

Bloom Color:

Medium Blue

Dark Blue

White/Near White

Bloom Time:

Late Spring/Early Summer

Mid Summer

Blooms repeatedly

Foliage:

Evergreen

Velvet/Fuzzy-Textured

Other details:

Drought-tolerant; suitable for xeriscaping

Average Water Needs; Water regularly; do not overwater

Soil pH requirements:

5.6 to 6.0 (acidic)

6.1 to 6.5 (mildly acidic)

Patent Information:

Patented

Propagation Methods:

From softwood cuttings

From seed; sow indoors before last frost

Seed Collecting:

N/A: plant does not set seed, flowers are sterile, or plants will not come true from seed

Regional

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

Brea, California

Elizabeth City, North Carolina

Norristown, Pennsylvania

Conway, South Carolina

Lexington, Virginia

Lake Stevens, Washington

Sumner, Washington

show all

Gardeners' Notes:

1
positive
0
neutrals
0
negatives
RatingContent
Positive

On Apr 30, 2015, Pistil from Lake Stevens, WA (Zone 8a) wrote:

Hardy in Seattle, grows more shrub-like than 'Grace Ward', and it will climb up into neighboring shrubs. Longer bloom time than "Grace Ward', and gets bigger than the label says, but I cut it back successfully. Beautiful true blue, no pests, not slug bait.