Life Span
Perennial
Perennial
Type
Broadleaf Evergreen
Tree
Origin
Europe, Russia
Southeastern United States
Types
Symphytum officinale (common comfrey), Symphytum asperum (rough comfrey)
Tree
Number of Varieties
2-
0
40000
👆🏻
Habitat
Cold Regions, stream banks
Dappled Shade, Sunny Edge, Woodland Garden Canopy
USDA Hardiness Zone
6-115-9
0
99
👆🏻
AHS Heat Zone
-
9-3
Sunset Zone
21,22
2b, 3a, 3b, 4, 5, 6, 7, 8, 9, 14, 15, 16, 17
Habit
Upright/Erect
Pyramidal
Plant Size
Minimum Height
20.00 cm460.00 cm
0
3900
👆🏻
Minimum Width
90.00 cm370.00 cm
0
6350
👆🏻
Plant Color
Flower Color
White, Light Pink
White
Flower Color Modifier
Bicolor
Bicolor
Fruit Color
Orange Red
Brown
Leaf Color in Spring
Red, Green, Copper
Green
Leaf Color in Summer
Green, Blue Green
Dark Green
Leaf Color in Fall
Green, Blue Green
Red, Orange Red
Leaf Color in Winter
Red, Dark Green, Burgundy, Bronze
-
Shape
Leaf Shape
Oval
Oblong to ablanceolate
Thorns
✔
✘
✔
✘
Plant Season
Spring, Summer, Fall, Winter
Spring, Summer, Fall, Winter
Growing Conditions
Sunlight
Full Sun, Partial Sun, Partial shade
Full Sun, Partial Sun
Growth Rate
Medium
Slow
Type of Soil
Loam, Sand
Clay, Loam
The pH of Soil
Acidic, Neutral
Acidic
Soil Drainage
Well drained
Well drained
Bloom Time
Late Spring, Early Summer, Summer
Early Summer, Summer
Repeat Bloomer
✔
✘
✔
✘
Tolerances
-
-
Where to Plant?
Container, Ground
Ground
How to Plant?
Root Division, Transplanting
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
Soil Type
Loam, Sand
Clay, Loam
Soil Drainage Capacity
Well drained
Well drained
Sun Exposure
Full Sun, Partial Sun, Partial shade
Full Sun, Partial Sun
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
Nitrate based fertilizers
Pests and Diseases
Aphids, Stem spot
Beetles
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
Medium
Foliage Sheen
Glossy
Glossy
Evergreen
✔
✘
✔
✘
Invasive
✔
✘
✔
✘
Self-Sowing
✔
✘
✔
✘
Attracts
Ants, Butterflies, pollinators
Birds
Allergy
Antibacterial, Peripheral Edema
-
Uses
Aesthetic Uses
Cottage Garden, Showy Purposes
Beautification
Beauty Benefits
Acne, Beautiful Skin, Reduce Bruises, Remove blemishes
Hair Conditioner, Skin Problems
Edible Uses
✔
✘
✔
✘
Environmental Uses
Air purification, Fixes Nitrogen
Air purification
Plant Benefits
Medicinal Uses
Asthma, Diarrhea, Obesity, Osteoarthritis
Cardiac, Diuretic, Refrigerant, Tonic
Part of Plant Used
Leaves, Twigs
Bark, Leaves
Other Uses
Used for its medicinal properties
It is a remedy for treating fevers, Used in making tea, Used in treatment of mouth ulcers
Used As Indoor Plant
✔
✘
✔
✘
Used As Outdoor Plant
✔
✘
✔
✘
Garden Design
Container, Feature Plant, Foundation, Groundcover, Hedges, Mixed Border, Tropical
Feature Plant, Mixed Border
Botanical Name
Symphytum asperum
OXYDENDRUM arboreum
Common Name
Comfrey,Black Root, Blackwort, Bruisewort
Sourwood
In Hindi
Blackwort
Sourwood
In German
Blackwort
Sourwood
In French
Blackwort
Sourwood
In Spanish
Blackwort
Sourwood
In Greek
Blackwort
Sourwood
In Portuguese
Blackwort
Sourwood
In Polish
Blackwort
Sourwood
In Latin
Blackwort
Sourwood
Kingdom
Plantae
Plantae
Phylum
Magnoliophyta
Magnoliophyta
Class
Magnoliopsida
Magnoliopsida
Order
Lamiales
Ericales
Family
Boraginaceae
Ericaceae
Genus
Symphytum
Oxydendrum
Clade
Angiosperms, Eudicots, Rosids
Angiosperms, Asterids, Eudicots
Tribe
-
Oxydendreae
Subfamily
Boraginoideae
Vaccinioideae
Number of Species
351
1
27800
👆🏻