Life Span
Perennial
Perennial
Type
Broadleaf Evergreen
Epiphyte
Origin
Europe, Russia
Southeastern United States, Latin America and the Caribbean, Caribbean, Central America, South America
Types
Symphytum officinale (common comfrey), Symphytum asperum (rough comfrey)
-
Number of Varieties
23
0
40000
👆🏻
Habitat
Cold Regions, stream banks
Swamps
USDA Hardiness Zone
6-1110-13
0
99
👆🏻
AHS Heat Zone
-
12-9
Sunset Zone
21,22
H1, H2, 23, 24
Habit
Upright/Erect
Clump-Forming
Plant Size
Minimum Height
20.00 cm30.50 cm
0
3900
👆🏻
Minimum Width
90.00 cm25.60 cm
0
6350
👆🏻
Plant Color
Flower Color
White, Light Pink
White, Burgundy, Dark Red, Light Green, Violet, Dark Salmon
Flower Color Modifier
Bicolor
Multi-Color
Fruit Color
Orange Red
-
Leaf Color in Spring
Red, Green, Copper
Green
Leaf Color in Summer
Green, Blue Green
Green
Leaf Color in Fall
Green, Blue Green
Green
Leaf Color in Winter
Red, Dark Green, Burgundy, Bronze
Green
Shape
Leaf Shape
Oval
Long Linear
Thorns
✔
✘
✔
✘
Plant Season
Spring, Summer, Fall, Winter
Spring, Summer, Fall
Growing Conditions
Sunlight
Full Sun, Partial Sun, Partial shade
Partial Sun, Partial shade
Growth Rate
Medium
Slow
Type of Soil
Loam, Sand
-
The pH of Soil
Acidic, Neutral
Neutral, Slightly Acidic
Soil Drainage
Well drained
Well drained
Bloom Time
Late Spring, Early Summer, Summer
Late Spring, Early Summer, Summer, Late Summer, Early Fall, Fall, Late Fall
Repeat Bloomer
✔
✘
✔
✘
Tolerances
-
-
Where to Plant?
Container, Ground
Container, Ground, Pot
How to Plant?
Root Division, Transplanting
Bulbs, By dividing rhizomes, tubers, Divison
Plant Maintenance
Low
Medium
Watering Plants
Watering Requirements
Allow to dry out slightly between watering, Water daily during growing season
Average Water Needs, Do Not over Water, Requires regular watering
In Summer
Lots of watering
Lots of watering
In Spring
Moderate
Moderate
In Winter
Average Water
Average Water
Soil
Soil pH
Acidic, Neutral
Neutral, Slightly Acidic
Soil Type
Loam, Sand
-
Soil Drainage Capacity
Well drained
Well drained
Sun Exposure
Full Sun, Partial Sun, Partial shade
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
Red blotch
Plant Tolerance
Shallow soil, Sun
Drought
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
Coarse
Foliage Sheen
Glossy
Glossy
Evergreen
✔
✘
✔
✘
Invasive
✔
✘
✔
✘
Self-Sowing
✔
✘
✔
✘
Attracts
Ants, Butterflies, pollinators
Bees, pollinators
Allergy
Antibacterial, Peripheral Edema
-
Uses
Aesthetic Uses
Cottage Garden, Showy Purposes
Bouquets, Showy Purposes
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
Cancer, Eye Problems
Part of Plant Used
Leaves, Twigs
Bulbs, Flowers, Leaves
Other Uses
Used for its medicinal properties
Used as Ornamental plant
Used As Indoor Plant
✔
✘
✔
✘
Used As Outdoor Plant
✔
✘
✔
✘
Garden Design
Container, Feature Plant, Foundation, Groundcover, Hedges, Mixed Border, Tropical
Container, Feature Plant, Houseplant, Mixed Border
Botanical Name
Symphytum asperum
PROSTHECHEA cochleata
Common Name
Comfrey,Black Root, Blackwort, Bruisewort
Clamshell Orchid, Cockleshell Orchid, Black Orchid
In Hindi
Blackwort
Clamshell Orchid
In German
Blackwort
Clamshell Orchid
In French
Blackwort
Clamshell Orchid
In Spanish
Blackwort
Clamshell Orchid
In Greek
Blackwort
Encyclia Cochleata
In Portuguese
Blackwort
Clamshell Orchid
In Polish
Blackwort
Clamshell Orchid
In Latin
Blackwort
Clamshell Orchid
Kingdom
Plantae
Plantae
Phylum
Magnoliophyta
Magnoliophyta
Class
Magnoliopsida
Liliopsida
Order
Lamiales
Orchidales
Family
Boraginaceae
Orchidaceae
Genus
Symphytum
Prosthechea
Clade
Angiosperms, Eudicots, Rosids
Angiosperms, Monocots
Tribe
-
Epidendreae
Subfamily
Boraginoideae
Epidendroideae
Number of Species
3550
1
27800
👆🏻