Life Span
Perennial
Perennial
Type
Tree
Broadleaf Evergreen
Origin
Eastern Asia, China, Japan
Europe, Russia
Types
Heronswood Globe , Kreukenberg Dwarf
Symphytum officinale (common comfrey), Symphytum asperum (rough comfrey)
Number of Varieties
102
0
40000
👆🏻
Habitat
shaded moist road banks, Wet Woods
Cold Regions, stream banks
USDA Hardiness Zone
4-86-11
0
99
👆🏻
AHS Heat Zone
8-1
-
Sunset Zone
2b, 3a, 3b, 4, 5, 6, 14, 15, 16, 18, 19, 20
21,22
Habit
Oval or Rounded
Upright/Erect
Plant Size
Minimum Height
1,220.00 cm20.00 cm
0
3900
👆🏻
Minimum Width
1,220.00 cm90.00 cm
0
6350
👆🏻
Plant Color
Flower Color
Red, Green
White, Light Pink
Flower Color Modifier
Bicolor
Bicolor
Fruit Color
Green, Copper, Sandy Brown
Orange Red
Leaf Color in Spring
Purple, Light Green, Bronze
Red, Green, Copper
Leaf Color in Summer
Green
Green, Blue Green
Leaf Color in Fall
Yellow, Gold, Orange Red
Green, Blue Green
Leaf Color in Winter
-
Red, Dark Green, Burgundy, Bronze
Shape
Leaf Shape
Heart-shaped
Oval
Thorns
✔
✘
✔
✘
Plant Season
Spring, Summer, Fall, Winter
Spring, Summer, Fall, Winter
Growing Conditions
Sunlight
Full Sun, Partial Sun
Full Sun, Partial Sun, Partial shade
Growth Rate
Medium
Medium
Type of Soil
Clay, Loam
Loam, Sand
The pH of Soil
Acidic, Neutral
Acidic, Neutral
Soil Drainage
Well drained
Well drained
Bloom Time
Early Spring
Late Spring, Early Summer, Summer
Repeat Bloomer
✔
✘
✔
✘
Tolerances
-
-
Where to Plant?
Ground
Container, Ground
How to Plant?
Seedlings, Transplanting
Root Division, Transplanting
Plant Maintenance
Medium
Low
Watering Plants
Watering Requirements
Keep ground moist, Use Mulches to help prevent water loss during hot and windy weather
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
Acidic, Neutral
Soil Type
Clay, Loam
Loam, Sand
Soil Drainage Capacity
Well drained
Well drained
Sun Exposure
Full Sun, Partial Sun
Full Sun, Partial Sun, Partial shade
Pruning
Prune if you want to improve plant shape, Remove dead branches
Cut or pinch the stems, Remove dead leaves
Fertilizers
All-Purpose Liquid Fertilizer, Apply 10-10-10 amount
14-14-14 Fertilizer, All-Purpose Liquid Fertilizer, can go long without fertilizers
Pests and Diseases
Bacterial leaf spot, Leafminers, Red blotch
Aphids, Stem spot
Plant Tolerance
Salt and Soil Compaction, Shade areas, waterlogging
Shallow soil, Sun
Flowers
Insignificant
Showy
Flower Petal Number
-
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, Butterflies
Ants, Butterflies, pollinators
Allergy
sneezing, Sore eyes
Antibacterial, Peripheral Edema
Uses
Aesthetic Uses
Beautification, Cottage Garden
Cottage Garden, Showy Purposes
Beauty Benefits
Making cosmetics, Skin Problems
Acne, Beautiful Skin, Reduce Bruises, Remove blemishes
Edible Uses
✔
✘
✔
✘
Environmental Uses
Shadow Tree, soil stabilisation
Air purification, Fixes Nitrogen
Plant Benefits
Medicinal Uses
-
Asthma, Diarrhea, Obesity, Osteoarthritis
Part of Plant Used
Whole plant
Leaves, Twigs
Other Uses
Showy Purposes, Used as Ornamental plant, Used in pulpwood and lumber production
Used for its medicinal properties
Used As Indoor Plant
✔
✘
✔
✘
Used As Outdoor Plant
✔
✘
✔
✘
Garden Design
Feature Plant, Shade Trees, Street Trees
Container, Feature Plant, Foundation, Groundcover, Hedges, Mixed Border, Tropical
Botanical Name
CERCIDIPHYLLUM japonicum
Symphytum asperum
Common Name
Katsura Tree
Comfrey,Black Root, Blackwort, Bruisewort
In Hindi
Cercidiphyllum
Blackwort
In German
Kuchenbäume
Blackwort
In French
Cercidiphyllum
Blackwort
In Spanish
Cercidiphyllum
Blackwort
In Greek
Cercidiphyllum
Blackwort
In Portuguese
Cercidiphyllum
Blackwort
In Polish
Grujecznik
Blackwort
In Latin
Cercidiphyllum
Blackwort
Kingdom
Plantae
Plantae
Phylum
Magnoliophyta
Magnoliophyta
Class
Magnoliopsida
Magnoliopsida
Order
Hamamelidales
Lamiales
Family
Cercidiphyllaceae
Boraginaceae
Genus
Cercidiphyllum
Symphytum
Clade
Angiosperms, Eudicots
Angiosperms, Eudicots, Rosids
Tribe
-
-
Subfamily
-
Boraginoideae
Number of Species
235
1
27800
👆🏻