Life Span
Perennial
Perennial
Type
Broadleaf Evergreen
Broadleaf Evergreen
Origin
Eastern Asia, China, Japan, Korea
Europe, Russia
Types
Cleyera japonica ‘Tricolor’
Symphytum officinale (common comfrey), Symphytum asperum (rough comfrey)
Number of Varieties
12
0
40000
👆🏻
Habitat
Warmer regions
Cold Regions, stream banks
USDA Hardiness Zone
6-106-11
0
99
👆🏻
AHS Heat Zone
-
-
Sunset Zone
21,22
21,22
Habit
Oval or Rounded
Upright/Erect
Plant Size
Minimum Height
2,240.00 cm20.00 cm
0
3900
👆🏻
Minimum Width
150.00 cm90.00 cm
0
6350
👆🏻
Plant Color
Flower Color
White, Yellow
White, Light Pink
Flower Color Modifier
Bicolor
Bicolor
Fruit Color
Yellow, Red, Bronze
Orange Red
Leaf Color in Spring
Red, Dark Green, Bronze
Red, Green, Copper
Leaf Color in Summer
Dark Green
Green, Blue Green
Leaf Color in Fall
Dark Green
Green, Blue Green
Leaf Color in Winter
Dark Green, Burgundy, Bronze
Red, Dark Green, Burgundy, Bronze
Shape
Leaf Shape
Ovate
Oval
Thorns
✔
✘
✔
✘
Plant Season
Spring, Summer, Fall, Winter
Spring, Summer, Fall, Winter
Growing Conditions
Sunlight
Full Sun, Partial Sun, Partial shade, Full Shade
Full Sun, Partial Sun, Partial shade
Growth Rate
Slow
Medium
Type of Soil
Clay, Loam, Sand
Loam, Sand
The pH of Soil
Acidic, Neutral
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?
Container, Ground, Pot
Container, Ground
How to Plant?
Tip cutting
Root Division, Transplanting
Plant Maintenance
Medium
Low
Watering Plants
Watering Requirements
Water 1 in. per week during the active growing period, Water more frequently during periods of extreme drought
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, Sand
Loam, Sand
Soil Drainage Capacity
Well drained
Well drained
Sun Exposure
Full Sun, Partial Sun, Partial shade, Full Shade
Full Sun, Partial Sun, Partial shade
Pruning
Remove damaged leaves, Remove dead branches, Remove dead leaves
Cut or pinch the stems, Remove dead leaves
Fertilizers
All-Purpose Liquid Fertilizer
14-14-14 Fertilizer, All-Purpose Liquid Fertilizer, can go long without fertilizers
Pests and Diseases
Red blotch
Aphids, Stem spot
Plant Tolerance
Drought
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
Glossy
Glossy
Evergreen
✔
✘
✔
✘
Invasive
✔
✘
✔
✘
Self-Sowing
✔
✘
✔
✘
Attracts
Bees, pollinators
Ants, Butterflies, pollinators
Allergy
Mild Allergen
Antibacterial, Peripheral Edema
Uses
Aesthetic Uses
Cottage Garden, Formal Garden, Informal Hedge, Landscape Designing, Mixed Border, Used for making hedges, Used in parkland
Cottage Garden, Showy Purposes
Beauty Benefits
-
Acne, Beautiful Skin, Reduce Bruises, Remove blemishes
Edible Uses
✔
✘
✔
✘
Environmental Uses
Air purification
Air purification, Fixes Nitrogen
Plant Benefits
Medicinal Uses
-
Asthma, Diarrhea, Obesity, Osteoarthritis
Part of Plant Used
extracted oil, Leaves, Seeds, Stem
Leaves, Twigs
Other Uses
Used as a building material, Used as fuel
Used for its medicinal properties
Used As Indoor Plant
✔
✘
✔
✘
Used As Outdoor Plant
✔
✘
✔
✘
Garden Design
Container, Feature Plant, Foundation, Hedges, Houseplant, Mixed Border, Screening, Wind Break, Topiary, Bonsai, Espalier
Container, Feature Plant, Foundation, Groundcover, Hedges, Mixed Border, Tropical
Botanical Name
TERNSTROEMIA gymnanthera 'Conthera'
Symphytum asperum
Common Name
Cleyera Japonica, Sakaki Tree, Japanese ternstroemia
Comfrey,Black Root, Blackwort, Bruisewort
In Hindi
Cleyera
Blackwort
In German
Sakaki
Blackwort
In French
Cleyera
Blackwort
In Spanish
Cleyera
Blackwort
In Greek
Cleyera
Blackwort
In Portuguese
Cleyera
Blackwort
In Polish
Cleyera
Blackwort
In Latin
Ternstroemia Gymnanthera
Blackwort
Kingdom
Plantae
Plantae
Phylum
Tracheophyta
Magnoliophyta
Class
Magnoliopsida
Magnoliopsida
Order
Theales
Lamiales
Family
Theaceae
Boraginaceae
Genus
Cleyera
Symphytum
Clade
Angiosperms, Asterids, Eudicots
Angiosperms, Eudicots, Rosids
Tribe
Freziereae
-
Subfamily
-
Boraginoideae
Number of Species
1835
1
27800
👆🏻