General Plant Information (Edit)
Plant Habit: Shrub
Life cycle: Perennial
Sun Requirements: Full Sun
Full Sun to Partial Shade
Minimum cold hardiness: Zone 5a -28.9 °C (-20 °F) to -26.1 °C (-15 °F)
Maximum recommended zone: Zone 9b
Plant Height: 4-12 inches
Plant Spread: 2-3 feet
Leaves: Evergreen
Other: Hairy leaves/Fuzzy.
Flowers: Showy
Other: heavy reseeder
Flower Color: Blue
Other: Vivid deep blue in abundance.
Bloom Size: Under 1"
Flower Time: Late spring or early summer
Late summer or early fall
Other: intermittently throughout the year
Suitable Locations: Xeriscapic
Uses: Erosion control
Will Naturalize
Wildlife Attractant: Bees
Toxicity: Other: Contact with skin could cause irritation or allergic reaction.
Propagation: Seeds: Sow in situ
Start indoors
Can handle transplanting
Propagation: Other methods: Cuttings: Stem
Cuttings: Tip
Other: semi hardwood cuttings.
Containers: Suitable in 3 gallon or larger
Suitable for hanging baskets
Needs excellent drainage in pots
Awards and Recognitions: Other: Award of Garden Merit

Common names
  • Lithodora
  • Shrubby Gromwell
Botanical names
  • Accepted: Glandora diffusa
  • Synonym: Lithodora diffusa
  • Synonym: Lithospermum diffusum

Photo Gallery
Location: Fairfax, VA
Location: Calgary, AB
Date: 2017-06-17
Location: Central NJ, Zone 7A
Date: 2017-04-02
Lithodora diffusa
Location: Calgary, AB
Date: 2017-06-17
Closeup of flowers and leaves
Location: Botanical Garden Utrecht (The Netherlands)
Date: 2016-07-02

Credit florum
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