Life Span
Perennial
Annual
Type
Broadleaf Evergreen
Bulb or Corm or Tuber
Origin
Europe, Russia
Eastern Europe, Southern Europe, Mediterranean, Turkey, Western Asia
Types
Symphytum officinale (common comfrey), Symphytum asperum (rough comfrey)
Mountain silverbell , Rosea
Number of Varieties
23
0
40000
👆🏻
Habitat
Cold Regions, stream banks
Floodplains, low mountains, Lower slopes, secondary forest
USDA Hardiness Zone
6-115-9
0
99
👆🏻
AHS Heat Zone
-
9-5
Sunset Zone
21,22
21,22
Habit
Upright/Erect
Clump-Forming
Plant Size
Minimum Height
20.00 cm25.40 cm
0
3900
👆🏻
Minimum Width
90.00 cm30.50 cm
0
6350
👆🏻
Plant Color
Flower Color
White, Light Pink
White
Flower Color Modifier
Bicolor
Bicolor
Fruit Color
Orange Red
-
Leaf Color in Spring
Red, Green, Copper
Green
Leaf Color in Summer
Green, Blue Green
Light Green
Leaf Color in Fall
Green, Blue Green
Several shades of Green
Leaf Color in Winter
Red, Dark Green, Burgundy, Bronze
Light Green
Shape
Leaf Shape
Oval
Acuminate
Thorns
✔
✘
✔
✘
Plant Season
Spring, Summer, Fall, Winter
Spring
Growing Conditions
Sunlight
Full Sun, Partial Sun, Partial shade
Full Sun, Partial Sun, Partial shade
Growth Rate
Medium
Fast
Type of Soil
Loam, Sand
-
The pH of Soil
Acidic, Neutral
-
Soil Drainage
Well drained
Well drained
Bloom Time
Late Spring, Early Summer, Summer
Spring, Late Spring
Repeat Bloomer
✔
✘
✔
✘
Tolerances
-
Drought
Where to Plant?
Container, Ground
Ground
How to Plant?
Root Division, Transplanting
Layering, Seedlings, Stem Cutting
Plant Maintenance
Low
Medium
Watering Plants
Watering Requirements
Allow to dry out slightly between watering, Water daily during growing season
occasional watering once established
In Summer
Lots of watering
Lots of watering
In Spring
Moderate
Moderate
In Winter
Average Water
Average Water
Soil
Soil pH
Acidic, Neutral
-
Soil Type
Loam, Sand
-
Soil Drainage Capacity
Well drained
Well drained
Sun Exposure
Full Sun, Partial Sun, Partial shade
Full Sun, Partial Sun, Partial shade
Pruning
Cut or pinch the stems, Remove dead leaves
Prune grass to maintain level, Remove damaged leaves, Remove dead branches, Remove dead leaves
Fertilizers
14-14-14 Fertilizer, All-Purpose Liquid Fertilizer, can go long without fertilizers
All-Purpose Liquid Fertilizer
Pests and Diseases
Aphids, Stem spot
Pests and diseases free
Plant Tolerance
Shallow soil, Sun
Drought and Salt
Flowers
Showy
Showy
Flower Petal Number
Single
Single
Fruits
Showy Fruit
✔
✘
✔
✘
Edible Fruit
✔
✘
✔
✘
Fragrance
Fragrant Flower
✔
✘
✔
✘
Fragrant Fruit
✔
✘
✔
✘
Fragrant Leaf
✔
✘
✔
✘
Fragrant Bark/Stem
✔
✘
✔
✘
Showy Foliage
✔
✘
✔
✘
Showy Bark
✔
✘
✔
✘
Foliage Texture
Medium
Medium
Foliage Sheen
Glossy
Glossy
Evergreen
✔
✘
✔
✘
Invasive
Sometimes
Sometimes
Self-Sowing
✔
✘
✔
✘
Attracts
Ants, Butterflies, pollinators
Bees, Flying insects
Allergy
Antibacterial, Peripheral Edema
-
Uses
Aesthetic Uses
Cottage Garden, Showy Purposes
along a porch, deck or patio, Beautification, Cottage Garden, Showy Purposes, Wild gardens
Beauty Benefits
Acne, Beautiful Skin, Reduce Bruises, Remove blemishes
-
Edible Uses
✔
✘
✔
✘
Environmental Uses
Air purification, Fixes Nitrogen
Air purification
Plant Benefits
Medicinal Uses
Asthma, Diarrhea, Obesity, Osteoarthritis
-
Part of Plant Used
Leaves, Twigs
-
Other Uses
Used for its medicinal properties
Decoration Purposes
Used As Indoor Plant
✔
✘
✔
✘
Used As Outdoor Plant
✔
✘
✔
✘
Garden Design
Container, Feature Plant, Foundation, Groundcover, Hedges, Mixed Border, Tropical
Container, Cutflower, Mixed Border, Rock Garden / Wall
Botanical Name
Symphytum asperum
ORNITHOGALUM nutans
Common Name
Comfrey,Black Root, Blackwort, Bruisewort
Drooping Star-of-Bethlehem, Nodding Star-of-Bethlehem, Silver Bells
In Hindi
Blackwort
Silver bells
In German
Blackwort
Silver bells
In French
Blackwort
Silver bells
In Spanish
Blackwort
Silver bells
In Greek
Blackwort
Silver bells
In Portuguese
Blackwort
Silver bells
In Polish
Blackwort
Silver bells
In Latin
Blackwort
Silver bells
Kingdom
Plantae
Plantae
Phylum
Magnoliophyta
Angiosperms
Class
Magnoliopsida
Magnoliopsida
Order
Lamiales
Ebenales
Family
Boraginaceae
Asparagaceae
Genus
Symphytum
Halesia
Clade
Angiosperms, Eudicots, Rosids
Eudicots
Tribe
-
-
Subfamily
Boraginoideae
-
Number of Species
354
1
27800
👆🏻