
trefle.io · Taken May 7, 2019 by Pep Secem (cc-by-sa)
Boraginaceae
Tuberous comfrey
Symphytum tuberosum
Also known as Symphytum tuberosum, Tuberous-rooted comfrey, Russian comfrey
Native Plants · Comfrey · Shade Perennial · Tuberous · Boraginaceae · Medicinal Herb · Woodland · Symphytum · European Native · Pollinator · Spring Flowers
Tuberous comfrey is a shade-tolerant perennial that does best in moist, humus-rich soil under partial shade. It produces clusters of pale yellow tubular flowers in spring and is largely self-sufficient once established. Avoid overwatering and divide clumps every few years to keep plants healthy.
Growing conditions
The details behind the basics
- Daily light
- 4 hours
- Watering
- Water thoroughly; keep soil evenly moist, especially during active growth · Every 7-10 days
- Maintenance
- Low
- Soil
- loam
- Soil pH
- 7–7.5
- Temperature
- -20°F to 85°F
- Cycle
- Perennial
- Propagation
- Seed, Cutting
Hardiness
USDA 5a-10b
Form & growth
Mature size and habit
- Mature height
- 12 in – 3 ft
- Spread
- 2 ft
- Spacing
- 18 in apart
- Growth rate
- Moderate
- Root depth
- Medium
- Flowers
- No
- Foliage
- Medium
Ecology & origin
Where it belongs and what it brings
- Native to
- Albania, Austria, Baleares, Belarus, Bulgaria, Connecticut, Czechoslovakia, France, Germany, Great Britain, Greece, Hungary, Italy, Maine, Masachusettes, Poland, Romania, Spain, Switzerland, Turkey
- Attracts
- Bees, Butterflies, Moths
Sources: trefle, usda
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