Glandora, Lithodora, Scrambling Gromwell, Shrubby Gromwell 'White Star'

Glandoradiffusa

Species
diffusa (dy-FEW-sa)
Synonym
Lithodora diffusa
Sun Exposure
Full Sun
Sun to Partial Shade
Foliage
Evergreen
Succulent
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)
Danger
Handling plant may cause skin irritation or allergic reaction
Bloom Color
Dark Blue
Medium Blue
White/Near White
Bloom Time
Late Spring/Early Summer
Mid Summer
Blooms repeatedly
Other Details
Category
Alpines and Rock Gardens
Groundcovers
Perennials
Water Requirements
Drought-tolerant; suitable for xeriscaping
Average Water Needs; Water regularly; do not overwater
Foliage Color
Where to Grow
Bloom Characteristics
Bloom Size
Other details
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 is said to grow outdoors in the following regions:

Brea, California

Elizabeth City, North Carolina

Portland, Oregon

Norristown, Pennsylvania

Conway, South Carolina

Lexington, Virginia

Lake Stevens, Washington

Sumner, Washington

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Gardener's Notes:

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0
neutral
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negative
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Lake Stevens, WA (Zone 8a) | April 2015 | positive

Hardy in Seattle, grows more shrub-like than 'Grace Ward', and it will climb up into neighboring shrubs. Longer bloom time than "Grace Wa...Read More

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