Life Span
Perennial
Perennial
Type
Needled or Scaled Evergreen
Broadleaf Evergreen
Origin
Northwestern United States, Canada
Europe, Russia
Types
-
Symphytum officinale (common comfrey), Symphytum asperum (rough comfrey)
Number of Varieties
62
0
40000
👆🏻
Habitat
Lowland, Moist Soils, Swamps
Cold Regions, stream banks
USDA Hardiness Zone
5-76-11
0
99
👆🏻
AHS Heat Zone
8-1
-
Sunset Zone
A3, 1a, 1b, 2a, 2b, 3a, 3b, 4, 5, 6, 7, 8, 9, 14, 15, 16, 17, 18, 19, 20, 21, 22, 23, 24
21,22
Habit
Pyramidal
Upright/Erect
Plant Size
Minimum Height
1,520.00 cm20.00 cm
0
3900
👆🏻
Minimum Width
760.00 cm90.00 cm
0
6350
👆🏻
Plant Color
Flower Color
Light Yellow
White, Light Pink
Flower Color Modifier
Bicolor
Bicolor
Fruit Color
Brown, Sienna
Orange Red
Leaf Color in Spring
Dark Green
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, Bronze
Red, Dark Green, Burgundy, Bronze
Shape
Leaf Shape
Scale-like imbricate
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
Fast
Medium
Type of Soil
Loam
Loam, Sand
The pH of Soil
Acidic, Neutral
Acidic, Neutral
Soil Drainage
Well drained
Well drained
Bloom Time
Spring
Late Spring, Early Summer, Summer
Repeat Bloomer
✔
✘
✔
✘
Tolerances
Pollution, Soil Compaction
-
Where to Plant?
Ground
Container, Ground
How to Plant?
Cuttings, Hardwood Cuttings, Rooted stem cutting, Seedlings
Root Division, Transplanting
Plant Maintenance
Medium
Low
Watering Plants
Watering Requirements
Average Water Needs, Needs a lot of moisture in the growing season, when new, water every week
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, Alkaline
Acidic, Neutral
Soil Type
Clay, Loam, Sand
Loam, Sand
Soil Drainage Capacity
Well drained
Well drained
Sun Exposure
Full Sun
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
Armillaria root rot, Bark beetles
Aphids, Stem spot
Plant Tolerance
Drought
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
Fine
Medium
Foliage Sheen
Glossy
Glossy
Evergreen
✔
✘
✔
✘
Invasive
✔
✘
✔
✘
Self-Sowing
✔
✘
✔
✘
Attracts
-
Ants, Butterflies, pollinators
Allergy
Asthma, contact allergic dermatitis, Urticaria
Antibacterial, Peripheral Edema
Uses
Aesthetic Uses
-
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
Bronchitis, Cold, Cough, Fever, Sore throat
Asthma, Diarrhea, Obesity, Osteoarthritis
Part of Plant Used
Branch, Inner Bark, Leaves, Wood
Leaves, Twigs
Other Uses
Dugout canoes, Making deodorants, Medicinal oil, Paper pulp, Pulp can be used to make rope place mats and other goods, Used as an insecticide, Used to make baskets
Used for its medicinal properties
Used As Indoor Plant
✔
✘
✔
✘
Used As Outdoor Plant
✔
✘
✔
✘
Garden Design
Feature Plant, Hedges, Screening / Wind Break
Container, Feature Plant, Foundation, Groundcover, Hedges, Mixed Border, Tropical
Botanical Name
THUJA plicata
Symphytum asperum
Common Name
Giant Arborvitae, Green Giant Arborvitae, Western Arborvitae, Western Red Cedar
Comfrey,Black Root, Blackwort, Bruisewort
In Hindi
Pacific redcedar
Blackwort
In German
Riesen-Lebensbaum
Blackwort
In French
Thuja plicata
Blackwort
In Spanish
Thuja plicata
Blackwort
In Greek
Thuja plicata
Blackwort
In Portuguese
Thuja plicata
Blackwort
In Polish
Żywotnik olbrzymi
Blackwort
In Latin
Thuja plicata
Blackwort
Kingdom
Plantae
Plantae
Phylum
Pinophyta
Magnoliophyta
Class
Pinopsida
Magnoliopsida
Order
Pinales
Lamiales
Family
Cupressaceae
Boraginaceae
Genus
Thuja
Symphytum
Clade
-
Angiosperms, Eudicots, Rosids
Tribe
-
-
Subfamily
-
Boraginoideae
Number of Species
1535
1
27800
👆🏻