Life Span
Perennial
Perennial
Type
Broadleaf Evergreen
Tree
Origin
Europe, Russia
North America, Northeastern United States, Mid-Atlantic United States, North-Central United States, Central United States, South-Central United States, Canada
Types
Symphytum officinale (common comfrey), Symphytum asperum (rough comfrey)
-
Habitat
Cold Regions, stream banks
Woodland Garden Canopy
USDA Hardiness Zone
6-11
3-11
Sunset Zone
21,22
7, 8, 9, 10, 11, 12, 13, 14, 15, 16, 17, 18, 19, 20, 21, 22, 23, 24
Habit
Upright/Erect
Upright/Erect
Flower Color
White, Light Pink
Tan, Sandy Brown
Flower Color Modifier
Bicolor
Bicolor
Fruit Color
Orange Red
Green, Sandy Brown
Leaf Color in Spring
Red, Green, Copper
Green
Leaf Color in Summer
Green, Blue Green
Green, Dark Green
Leaf Color in Fall
Green, Blue Green
Yellow, Green
Leaf Color in Winter
Red, Dark Green, Burgundy, Bronze
-
Leaf Shape
Oval
oblong or obovate
Plant Season
Spring, Summer, Fall, Winter
-
Sunlight
Full Sun, Partial Sun, Partial shade
Full Sun, Partial Sun, Partial shade
Growth Rate
Medium
Medium
Type of Soil
Loam, Sand
Clay, Loam, Sand
The pH of Soil
Acidic, Neutral
Neutral, Alkaline
Soil Drainage
Well drained
Average
Bloom Time
Late Spring, Early Summer, Summer
Early Spring, Spring
Where to Plant?
Container, Ground
Ground
How to Plant?
Root Division, Transplanting
Seedlings
Plant Maintenance
Low
Medium
Watering Requirements
Allow to dry out slightly between watering, Water daily during growing season
Average Water Needs
In Summer
Lots of watering
Lots of watering
In Spring
Moderate
Moderate
In Winter
Average Water
Average Water
Soil pH
Acidic, Neutral
Neutral, Alkaline
Soil Type
Loam, Sand
Clay, Loam, Sand
Soil Drainage Capacity
Well drained
Average
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
Any balanced general purpose fertilizer
Pests and Diseases
Aphids, Stem spot
Blackspot mold
Plant Tolerance
Shallow soil, Sun
Drought
Flowers
Showy
Insignificant
Flower Petal Number
Single
-
Showy Foliage
Yes
Insignificant
Foliage Texture
Medium
Medium
Foliage Sheen
Glossy
Matte
Attracts
Ants, Butterflies, pollinators
Beetles, Birds
Allergy
Antibacterial, Peripheral Edema
Miscarriage, Rash
Aesthetic Uses
Cottage Garden, Showy Purposes
-
Beauty Benefits
Acne, Beautiful Skin, Reduce Bruises, Remove blemishes
Beautiful Skin, Heals Damaged Hair, Strong, beautiful hair
Environmental Uses
Air purification, Fixes Nitrogen
Air purification
Medicinal Uses
Asthma, Diarrhea, Obesity, Osteoarthritis
Demulcent, Diuretic, Expectorant, Nutritive
Part of Plant Used
Leaves, Twigs
Fruits, Inner Bark, Leaves
Other Uses
Used for its medicinal properties
Chewed as a thirst quencher, Tea-like beverage can be brewed, Used as a thickener in soups, Used to make a twine
Used As Indoor Plant
No
No
Used As Outdoor Plant
Yes
Yes
Garden Design
Container, Feature Plant, Foundation, Groundcover, Hedges, Mixed Border, Tropical
Shade Trees
Botanical Name
Symphytum asperum
ULMUS rubra
Common Name
Comfrey,Black Root, Blackwort, Bruisewort
Slippery Elm
In Hindi
Blackwort
Slippery Elm
In German
Blackwort
Rotulme
In French
Blackwort
Slippery Elm
In Spanish
Blackwort
olmo resbaladizo
In Greek
Blackwort
Slippery Elm
In Portuguese
Blackwort
Slippery Elm
In Polish
Blackwort
Slippery Elm
In Latin
Blackwort
Lubricus Elm
Phylum
Magnoliophyta
Magnoliophyta
Class
Magnoliopsida
Magnoliopsida
Family
Boraginaceae
Ulmaceae
Clade
Angiosperms, Eudicots, Rosids
Angiosperms, Eudicots, Rosids
Subfamily
Boraginoideae
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Season and Care of Comfrey and Slippery Elm
Season and care of Comfrey and Slippery Elm is important to know. While considering everything about Comfrey and Slippery Elm Care, growing season is an essential factor. Comfrey season is Spring, Summer, Fall and Winter and Slippery Elm season is Spring, Summer, Fall and Winter. The type of soil for Comfrey is Loam, Sand and for Slippery Elm is Clay, Loam, Sand while the PH of soil for Comfrey is Acidic, Neutral and for Slippery Elm is Neutral, Alkaline.
Comfrey and Slippery Elm Physical Information
Comfrey and Slippery Elm physical information is very important for comparison. Comfrey height is 20.00 cm and width 90.00 cm whereas Slippery Elm height is 1,830.00 cm and width 8.50 cm. The color specification of Comfrey and Slippery Elm are as follows:
Comfrey flower color: White and Light Pink
Comfrey leaf color: Red, Green and Copper
Slippery Elm flower color: Tan and Sandy Brown
- Slippery Elm leaf color: Green
Care of Comfrey and Slippery Elm
Care of Comfrey and Slippery Elm include pruning, fertilizers, watering etc. Comfrey pruning is done Cut or pinch the stems and Remove dead leaves and Slippery Elm pruning is done Remove damaged leaves, Remove dead branches and Remove dead leaves. In summer Comfrey needs Lots of watering and in winter, it needs Average Water. Whereas, in summer Slippery Elm needs Lots of watering and in winter, it needs Average Water.