Life Span
Perennial
-
Type
Broadleaf Evergreen
Tree
Origin
Europe, Russia
China, Japan
Types
Symphytum officinale (common comfrey), Symphytum asperum (rough comfrey)
Cryptomeria japonica 'Cristata'
Cryptomeria japonica 'Dacrydioides'
Cryptomeria japonica 'Spiralis'
Cryptomeria japonica 'Bandai Sugi'
Cryptomeria japonica 'Black Dragon'
Number of Varieties
215
0
40000
👆🏻
Habitat
Cold Regions, stream banks
Hills, low mountains, Mountain Slopes, Mountain tops, Mountains
USDA Hardiness Zone
6-115-9
0
99
👆🏻
AHS Heat Zone
-
9-4
Sunset Zone
21,22
4, 5, 6, 7, 8, 9, 14, 15, 16, 17, 18, 19, 20, 21, 22, 23, 24
Habit
Upright/Erect
Pyramidal
Plant Size
Minimum Height
20.00 cm1,830.00 cm
0
3900
👆🏻
Minimum Width
90.00 cm610.00 cm
0
6350
👆🏻
Plant Color
Flower Color
White, Light Pink
-
Flower Color Modifier
Bicolor
Bicolor
Fruit Color
Orange Red
Brown
Leaf Color in Spring
Red, Green, Copper
Green, Blue Green
Leaf Color in Summer
Green, Blue Green
Green, Blue Green
Leaf Color in Fall
Green, Blue Green
Green
Leaf Color in Winter
Red, Dark Green, Burgundy, Bronze
Green, Purple, Brown, Bronze
Shape
Leaf Shape
Oval
Acicular
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
Loam, Sand
Clay, Loam
The pH of Soil
Acidic, Neutral
Acidic, Neutral
Soil Drainage
Well drained
Well drained
Bloom Time
Late Spring, Early Summer, Summer
-
Repeat Bloomer
✔
✘
✔
✘
Tolerances
-
-
Where to Plant?
Container, Ground
Ground
How to Plant?
Root Division, Transplanting
Budding, Seedlings
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, Do not water frequently
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
Loam, Sand
Clay, Loam
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, Apply N-P-K
Pests and Diseases
Aphids, Stem spot
Leaf spot, Mites, Red blotch
Plant Tolerance
Shallow soil, Sun
Drought
Flowers
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
Fine
Foliage Sheen
Glossy
-
Evergreen
✔
✘
✔
✘
Invasive
✔
✘
✔
✘
Self-Sowing
✔
✘
✔
✘
Attracts
Ants, Butterflies, pollinators
-
Allergy
Antibacterial, Peripheral Edema
Hay fever
Uses
Aesthetic Uses
Cottage Garden, 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
-
Part of Plant Used
Leaves, Twigs
Wood
Other Uses
Used for its medicinal properties
-
Used As Indoor Plant
✔
✘
✔
✘
Used As Outdoor Plant
✔
✘
✔
✘
Garden Design
Container, Feature Plant, Foundation, Groundcover, Hedges, Mixed Border, Tropical
Feature Plant, Foundation, Screening / Wind Break, Shade Trees, Topiary / Bonsai / Espalier
Botanical Name
Symphytum asperum
CRYPTOMERIA japonica
Common Name
Comfrey,Black Root, Blackwort, Bruisewort
Japanese Cedar, Japanese Cryptomeria
In Hindi
Blackwort
Japanese Cedar
In German
Blackwort
der japanischen Zeder
In French
Blackwort
Cedar japonais
In Spanish
Blackwort
cedro japonés
In Greek
Blackwort
Ιαπωνικά Cedar
In Portuguese
Blackwort
Cedar japonês
In Polish
Blackwort
japoński cedr
In Latin
Blackwort
Italica Cedar
Kingdom
Plantae
Plantae
Phylum
Magnoliophyta
Tracheophyta
Class
Magnoliopsida
Pinopsida
Order
Lamiales
Pinales
Family
Boraginaceae
Cupressaceae
Genus
Symphytum
Cyptomeria
Clade
Angiosperms, Eudicots, Rosids
-
Tribe
-
-
Subfamily
Boraginoideae
-
Number of Species
3550
1
27800
👆🏻