
Common gromwell
Lithospermum officinale
Common gromwell is a hardy perennial herb that grows well in average, well-drained soils in sun to partial shade with very little intervention needed. Water periodically during dry spells but avoid consistently wet conditions, as it is tolerant of moderate drought once established. It has a long history of medicinal use and produces small white flowers that attract pollinators in early summer.
Care Level
Low
Sun
Partial Sun
Water
Moderate
Growth Rate
Moderate
Mature Height
12″ – 36″
Soil
loam
Life Cycle
Perennial
Spacing
12″
Watering Schedule
Every 10-14 Days • Water Deeply But Infrequently; Allow Soil To Dry Partially Between Waterings
Soil pH
7.5 – 8
Temperature
-20° – 85°F
Mature Spread
up to 24″
Root Depth
Medium
Foliage
Medium
Propagation: Seed, Cutting
Native to
Attracts
Sources
Data: trefle, usda
Image: trefle.io — Taken May 23, 2018 by Pep Secem (cc-by-sa)
No nurseries currently have this species in stock.