Life Span
Perennial
Perennial
Type
Broadleaf Evergreen
Needled or Scaled Evergreen
Origin
Europe, Russia
Northeastern United States, Mid-Atlantic United States, Southeastern United States, North-Central United States, Central United States, Canada
Types
Symphytum officinale (common comfrey), Symphytum asperum (rough comfrey)
Eastern White Cedar, Northern White Cedar, Arborvitae
Number of Varieties
212
0
40000
👆🏻
Habitat
Cold Regions, stream banks
Dry areas, Lake Sides, riparian zones, Slopes, Upland
USDA Hardiness Zone
6-113-7
0
99
👆🏻
AHS Heat Zone
-
7-1
Sunset Zone
21,22
A2, A3, H1, H2, 1a, 1b, 2a, 2b, 3a, 3b, 4, 5, 6, 7, 8, 9, 15, 16, 17, 21, 22, 23, 24
Habit
Upright/Erect
Pyramidal
Plant Size
Minimum Height
20.00 cm90.00 cm
0
3900
👆🏻
Minimum Width
90.00 cm90.00 cm
0
6350
👆🏻
Plant Color
Flower Color
White, Light Pink
Yellow, Yellow Brown
Flower Color Modifier
Bicolor
Bicolor
Fruit Color
Orange Red
Brownish Red, Red
Leaf Color in Spring
Red, Green, Copper
Green, Dark Green
Leaf Color in Summer
Green, Blue Green
Green, Dark Green
Leaf Color in Fall
Green, Blue Green
Green, Dark Green
Leaf Color in Winter
Red, Dark Green, Burgundy, Bronze
Green, Dark Green, Brown
Shape
Leaf Shape
Oval
Scale-like imbricate
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
Medium
Type of Soil
Loam, Sand
Loam, Sand
The pH of Soil
Acidic, Neutral
Acidic, Neutral
Soil Drainage
Well drained
Average
Bloom Time
Late Spring, Early Summer, Summer
Spring
Repeat Bloomer
✔
✘
✔
✘
Tolerances
-
Drought
Where to Plant?
Container, Ground
Ground
How to Plant?
Root Division, Transplanting
Seedlings, Stem Cutting
Plant Maintenance
Low
Medium
Watering Plants
Watering Requirements
Allow to dry out slightly between watering, Water daily during growing season
Drought Tolerant, Keep the ground moist but not water-logged, Requires regular watering
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
Loam, Sand
Soil Drainage Capacity
Well drained
Average
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
All-Purpose Liquid Fertilizer
Pests and Diseases
Aphids, Stem spot
Citrus leaf miner, Drought, Edema, Gray mold
Plant Tolerance
Shallow soil, Sun
Drought
Flowers
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
Anaphylaxis, Hives, Itchy eyes, Red eyes, Runny nose, Skin rash, sneezing, Watery eyes
Uses
Aesthetic Uses
Cottage Garden, Showy Purposes
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
anti rheumatic, Astringent, Diuretic, Expectorant, Tonic
Part of Plant Used
Leaves, Twigs
Bark, extracted oil, Leaves, Twigs
Other Uses
Used for its medicinal properties
Medicinal oil, Used as firewood, Used in herbal medicines, Used in Homeopathy
Used As Indoor Plant
✔
✘
✔
✘
Used As Outdoor Plant
✔
✘
✔
✘
Garden Design
Container, Feature Plant, Foundation, Groundcover, Hedges, Mixed Border, Tropical
Feature Plant, Foundation, Hedges, Mixed Border, Screening, Wind Break
Botanical Name
Symphytum asperum
THUJA occidentalis
Common Name
Comfrey,Black Root, Blackwort, Bruisewort
northern white cedar, swamp cedar, false white ceda
In Hindi
Blackwort
Thuja occidentalis
In German
Blackwort
Abendländischer Lebensbaum
In French
Blackwort
Thuya occidental
In Spanish
Blackwort
Tuya del Canadá
In Greek
Blackwort
Thuja occidentalis
In Portuguese
Blackwort
Thuja occidentalis
In Polish
Blackwort
Żywotnik_zachodni
In Latin
Blackwort
Thuja occidentalis
Kingdom
Plantae
Plantae
Phylum
Magnoliophyta
Tracheophyta
Class
Magnoliopsida
Pinopsida
Order
Lamiales
Pinales
Family
Boraginaceae
Cupressaceae
Genus
Symphytum
Thuja
Clade
Angiosperms, Eudicots, Rosids
-
Tribe
-
-
Subfamily
Boraginoideae
-
Number of Species
355
1
27800
👆🏻