Life Span
Perennial
Perennial
Type
Shrub
Broadleaf Evergreen
Origin
China
Europe, Russia
Types
-
Symphytum officinale (common comfrey), Symphytum asperum (rough comfrey)
Number of Varieties
22
0
40000
👆🏻
Habitat
Hills, Lower slopes, open Woodlands
Cold Regions, stream banks
USDA Hardiness Zone
4-86-11
0
99
👆🏻
AHS Heat Zone
8-1
-
Sunset Zone
A3, 1a, 1b, 2a, 2b, 3a, 3b, 4, 5, 6, 7, 8, 9, 14, 15, 16, 17, 18, 19, 20, 21
21,22
Habit
Upright/Erect
Upright/Erect
Plant Size
Minimum Height
240.00 cm20.00 cm
0
3900
👆🏻
Minimum Width
180.00 cm90.00 cm
0
6350
👆🏻
Plant Color
Flower Color
Light Green
White, Light Pink
Flower Color Modifier
-
Bicolor
Fruit Color
Brown, Light Green, Lime Green
Orange Red
Leaf Color in Spring
Green, Light Green
Red, Green, Copper
Leaf Color in Summer
Green, Light Green
Green, Blue Green
Leaf Color in Fall
Red
Green, Blue Green
Leaf Color in Winter
-
Red, Dark Green, Burgundy, Bronze
Shape
Leaf Shape
Lobed
Oval
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
Medium
Type of Soil
Clay, Loam, Sand
Loam, Sand
The pH of Soil
Acidic, Neutral, Alkaline
Acidic, Neutral
Soil Drainage
Well drained
Well drained
Bloom Time
Late Spring, Early Summer
Late Spring, Early Summer, Summer
Repeat Bloomer
✔
✘
✔
✘
Tolerances
Drought, Salt
-
Where to Plant?
Ground, Pot
Container, Ground
How to Plant?
Seedlings
Root Division, Transplanting
Plant Maintenance
Low
Low
Watering Plants
Watering Requirements
Average Water Needs, Requires regular watering, Requires watering in the growing season
Allow to dry out slightly between watering, Water daily during growing season
In Summer
Lots of watering
Lots of watering
In Spring
Moderate
Moderate
In Winter
Average Water
Average Water
Soil
Soil pH
Acidic, Neutral, Alkaline
Acidic, Neutral
Soil Type
Clay, Loam, Sand
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
Fertilizers
No fertilizers needed
14-14-14 Fertilizer, All-Purpose Liquid Fertilizer, can go long without fertilizers
Pests and Diseases
Red blotch, Spider mites
Aphids, Stem spot
Plant Tolerance
Drought, Salt
Shallow soil, Sun
Flowers
Insignificant
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
Matte
Glossy
Evergreen
✔
✘
✔
✘
Invasive
✔
✘
✔
✘
Self-Sowing
✔
✘
✔
✘
Attracts
Birds
Ants, Butterflies, pollinators
Allergy
Asthma
Antibacterial, Peripheral Edema
Uses
Aesthetic Uses
Landscape Designing
Cottage Garden, Showy Purposes
Beauty Benefits
-
Acne, Beautiful Skin, Reduce Bruises, Remove blemishes
Edible Uses
✔
✘
✔
✘
Environmental Uses
Air purification, Forms dense stands, Nesting sites for birds, No fertilizer, pesticides, or herbicides needed, Prevent Soil Erosion, Shadow Tree, Windbreak
Air purification, Fixes Nitrogen
Plant Benefits
Medicinal Uses
-
Asthma, Diarrhea, Obesity, Osteoarthritis
Part of Plant Used
Bark, Stem
Leaves, Twigs
Other Uses
Used as firewood, Used for woodware, Used in biomass, Used in construction, Used in Furniture, Wood is used for ship building, Wood is used in construction, Wood log is used in making fences
Used for its medicinal properties
Used As Indoor Plant
✔
✘
✔
✘
Used As Outdoor Plant
✔
✘
✔
✘
Garden Design
Cutflower, Feature Plant, Foundation, Hedges, Mixed Border, Screening, Wind Break
Container, Feature Plant, Foundation, Groundcover, Hedges, Mixed Border, Tropical
Botanical Name
EUONYMUS phellomanus
Symphytum asperum
Common Name
Cork Oak
Comfrey,Black Root, Blackwort, Bruisewort
In Hindi
कॉर्क ट्री
Blackwort
In German
Cork Tree
Blackwort
In French
Arbre de Cork
Blackwort
In Spanish
Árbol de corcho
Blackwort
In Greek
Cork Tree
Blackwort
In Portuguese
Cork Tree
Blackwort
In Polish
Cork Tree
Blackwort
In Latin
Cork ligno
Blackwort
Kingdom
Plantae
Plantae
Phylum
Anthophyta
Magnoliophyta
Class
Dicotyledonae
Magnoliopsida
Order
Fagales
Lamiales
Family
Celastraceae
Boraginaceae
Genus
Quercus
Symphytum
Clade
Angiosperms, Eudicots, Rosids
Angiosperms, Eudicots, Rosids
Tribe
Mirini
-
Subfamily
Mirinae
Boraginoideae
Number of Species
5035
1
27800
👆🏻