Life Span
Perennial
Perennial
Type
Broadleaf Evergreen
Shrub
Origin
Europe, Russia
China, Japan
Types
Symphytum officinale (common comfrey), Symphytum asperum (rough comfrey)
-
Number of Varieties
25
0
40000
👆🏻
Habitat
Cold Regions, stream banks
subtropical regions, Temperate Regions
USDA Hardiness Zone
6-116-9
0
99
👆🏻
AHS Heat Zone
-
9-7
Sunset Zone
21,22
4, 5, 6, 7, 8, 9, 10, 11, 12, 13, 14, 15, 16, 17, 18, 19, 20, 21, 22, 23, 24
Habit
Upright/Erect
Oval or Rounded
Plant Size
Minimum Height
20.00 cm300.00 cm
0
3900
👆🏻
Minimum Width
90.00 cm300.00 cm
0
6350
👆🏻
Plant Color
Flower Color
White, Light Pink
White, Silver
Flower Color Modifier
Bicolor
-
Fruit Color
Orange Red
Reddish Plum
Leaf Color in Spring
Red, Green, Copper
White, Dark Green, Sienna
Leaf Color in Summer
Green, Blue Green
White, Dark Green, Sienna
Leaf Color in Fall
Green, Blue Green
White, Dark Green, Sienna
Leaf Color in Winter
Red, Dark Green, Burgundy, Bronze
White, Dark Green, Sienna
Shape
Leaf Shape
Oval
broad, flat
Thorns
✔
✘
✔
✘
Plant Season
Spring, Summer, Fall, Winter
Spring, Summer, Fall, Winter
Growing Conditions
Sunlight
Full Sun, Partial Sun, Partial shade
Full Sun, Partial Sun, Partial shade
Growth Rate
Medium
Fast
Type of Soil
Loam, Sand
Clay, Loam, Sand
The pH of Soil
Acidic, Neutral
Acidic, Neutral, Alkaline
Soil Drainage
Well drained
Well drained
Bloom Time
Late Spring, Early Summer, Summer
Fall, Late Fall
Repeat Bloomer
✔
✘
✔
✘
Tolerances
-
Pollution, Salt
Where to Plant?
Container, Ground
Ground, Pot
How to Plant?
Root Division, Transplanting
Cuttings, root cutting, Seedlings
Plant Maintenance
Low
Medium
Watering Plants
Watering Requirements
Allow to dry out slightly between watering, Water daily during growing season
Average Water Needs
In Summer
Lots of watering
Lots of watering
In Spring
Moderate
Moderate
In Winter
Average Water
Average Water
Soil
Soil pH
Acidic, Neutral
Acidic, Neutral, Alkaline
Soil Type
Loam, Sand
Clay, 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
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
Coral Spot, Leaf spot, Red blotch
Plant Tolerance
Shallow soil, Sun
Drought
Flowers
Showy
Insignificant
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
Matte
Evergreen
✔
✘
✔
✘
Invasive
✔
✘
✔
✘
Self-Sowing
✔
✘
✔
✘
Attracts
Ants, Butterflies, pollinators
Birds
Allergy
Antibacterial, Peripheral Edema
Toxic
Uses
Aesthetic Uses
Cottage Garden, Showy Purposes
Bonsai, Cottage Garden, Ground Cover
Beauty Benefits
Acne, Beautiful Skin, Reduce Bruises, Remove blemishes
Skin irritation
Edible Uses
✔
✘
✔
✘
Environmental Uses
Air purification, Fixes Nitrogen
Fixes Nitrogen
Plant Benefits
Medicinal Uses
Asthma, Diarrhea, Obesity, Osteoarthritis
Antiasthamatic, Antitussive, Astringent
Part of Plant Used
Leaves, Twigs
Fruits, Leaves, Root, Stem
Other Uses
Used for its medicinal properties
Used as Ornamental plant, Used for making hedge
Used As Indoor Plant
✔
✘
✔
✘
Used As Outdoor Plant
✔
✘
✔
✘
Garden Design
Container, Feature Plant, Foundation, Groundcover, Hedges, Mixed Border, Tropical
Feature Plant, Hedges, Screening, Wind Break
Botanical Name
Symphytum asperum
Elaeagnus pungens
Common Name
Comfrey,Black Root, Blackwort, Bruisewort
Silverthorn
In Hindi
Blackwort
Silverthorn
In German
Blackwort
Silverthorn
In French
Blackwort
Silverthorn
In Spanish
Blackwort
Silverthorn
In Greek
Blackwort
Silverthorn
In Portuguese
Blackwort
Silverthorn
In Polish
Blackwort
Silverthorn
In Latin
Blackwort
Silverthorn
Kingdom
Plantae
Plantae
Phylum
Magnoliophyta
Magnoliophyta
Class
Magnoliopsida
Magnoliopsida
Order
Lamiales
Rhamnales
Family
Boraginaceae
Elaeagnaceae
Genus
Symphytum
Elaeagnus
Clade
Angiosperms, Eudicots, Rosids
Angiosperms, Eudicots, Rosids
Tribe
-
-
Subfamily
Boraginoideae
-
Number of Species
3570
1
27800
👆🏻