General Plant Information (Edit)
Plant Habit: Herb/Forb
Life cycle: Perennial
Sun Requirements: Full Sun to Partial Shade
Partial or Dappled Shade
Water Preferences: Mesic
Soil pH Preferences: Moderately acid (5.6 – 6.0)
Slightly acid (6.1 – 6.5)
Neutral (6.6 – 7.3)
Minimum cold hardiness: Zone 6a -23.3 °C (-10 °F) to -20.6 °C (-5 °F)
Maximum recommended zone: Zone 9b
Plant Height: 8 to 10 inches
Plant Spread: 24 to 48 inches
Leaves: Unusual foliage color
Deciduous
Other: Golden-yellow but will change to chartreuse in hot summers.
Flowers: Showy
Flower Color: Blue
Bloom Size: Under 1"
Flower Time: Late winter or early spring
Spring
Underground structures: Rhizome
Uses: Groundcover
Will Naturalize
Wildlife Attractant: Bees
Resistances: Deer Resistant
Tolerates dry shade
Drought tolerant
Propagation: Other methods: Division

Image
Common names
  • Black Sea Comfrey
Botanical names
  • Accepted: Trachystemon orientale
  • Synonym: Trachystemon orientalis
  • Synonym: Borago orientalis

Photo Gallery
Location: St Louis
Date: 2020-04-02
Golden foliage and lighter blue flowers than the species
Location: St Louis
Date: 2020-04-02
Location: St Louis
Date: 2020-04-02
Bright golden foliage

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