Life Span
Perennial
Perennial
Type
Broadleaf Evergreen
Tree
Origin
Europe, Russia
North America
Types
Symphytum officinale (common comfrey), Symphytum asperum (rough comfrey)
Bergmann's Elm, Chestnut-leafed Elm, Hangzhou Elm
Habitat
Cold Regions, stream banks
Woodland Garden Canopy
USDA Hardiness Zone
6-11
3-9
Sunset Zone
21,22
1a, 1b, 2a, 2b, 3a, 3b, 4, 5, 6, 7, 8, 9, 10, 11, 14, 15, 16, 17, 18, 19, 20, 21
Habit
Upright/Erect
Upright/Erect
Flower Color
White, Light Pink
Green
Flower Color Modifier
Bicolor
Bicolor
Fruit Color
Orange Red
Tan
Leaf Color in Spring
Red, Green, Copper
Light Green
Leaf Color in Summer
Green, Blue Green
Dark Green
Leaf Color in Fall
Green, Blue Green
Light Yellow
Leaf Color in Winter
Red, Dark Green, Burgundy, Bronze
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Plant Season
Spring, Summer, Fall, Winter
Spring, Summer, Fall, Winter
Sunlight
Full Sun, Partial Sun, Partial shade
Full Sun
Type of Soil
Loam, Sand
Loam
The pH of Soil
Acidic, Neutral
Acidic, Neutral
Soil Drainage
Well drained
Average
Bloom Time
Late Spring, Early Summer, Summer
Early Spring
Where to Plant?
Container, Ground
Ground
How to Plant?
Root Division, Transplanting
Budding, Grafting, Seedlings, Semi-hardwood cuttings, Softwood cuttings
Plant Maintenance
Low
Medium
Watering Requirements
Allow to dry out slightly between watering, Water daily during growing season
Average Water Needs, Do Not over Water, Requires regular watering
In Summer
Lots of watering
Lots of watering
In Spring
Moderate
Moderate
In Winter
Average Water
Average Water
Soil pH
Acidic, Neutral
Acidic, Neutral
Soil Type
Loam, Sand
Loam
Soil Drainage Capacity
Well drained
Average
Sun Exposure
Full Sun, Partial Sun, Partial shade
Full Sun
Pruning
Cut or pinch the stems, Remove dead leaves
Remove damaged leaves, Remove dead branches, Remove dead leaves, Remove dead or diseased plant parts, Remove deadheads
Fertilizers
14-14-14 Fertilizer, All-Purpose Liquid Fertilizer, can go long without fertilizers
Complete balanced fertilizer, fertilize in spring
Pests and Diseases
Aphids, Stem spot
Red blotch
Plant Tolerance
Shallow soil, Sun
Pollution
Flower Petal Number
Single
Single
Foliage Texture
Medium
Medium
Foliage Sheen
Glossy
Matte
Attracts
Ants, Butterflies, pollinators
Birds, Butterflies
Allergy
Antibacterial, Peripheral Edema
Pollen
Aesthetic Uses
Cottage Garden, Showy Purposes
-
Beauty Benefits
Acne, Beautiful Skin, Reduce Bruises, Remove blemishes
Good for skin and hair
Environmental Uses
Air purification, Fixes Nitrogen
Air purification, Nesting sites for birds, Shadow Tree
Medicinal Uses
Asthma, Diarrhea, Obesity, Osteoarthritis
Antispasmodic, Astringent, Birthing aid, Haemostatic, Salve
Part of Plant Used
Leaves, Twigs
Bark, Fibre, Leaves
Other Uses
Used for its medicinal properties
Container, String, Used for woodware, Used in paper industry
Used As Indoor Plant
No
No
Used As Outdoor Plant
Yes
Yes
Garden Design
Container, Feature Plant, Foundation, Groundcover, Hedges, Mixed Border, Tropical
Feature Plant, Shade Trees, Street Trees
Botanical Name
Symphytum asperum
ULMUS americana 'Augustine'
Common Name
Comfrey,Black Root, Blackwort, Bruisewort
American Elm, Augustine Elm
In Hindi
Blackwort
American Elm Tree
In German
Blackwort
Amerikanische Ulme
In French
Blackwort
Américaine Elm Tree
In Spanish
Blackwort
Olmo Americano Árbol
In Greek
Blackwort
American Elm Tree
In Portuguese
Blackwort
Árvore de olmo americano
In Polish
Blackwort
Amerykańska Elm Tree
In Latin
Blackwort
Latin ulmo
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 American Elm
Season and care of Comfrey and American Elm is important to know. While considering everything about Comfrey and American Elm Care, growing season is an essential factor. Comfrey season is Spring, Summer, Fall and Winter and American Elm season is Spring, Summer, Fall and Winter. The type of soil for Comfrey is Loam, Sand and for American Elm is Loam while the PH of soil for Comfrey is Acidic, Neutral and for American Elm is Acidic, Neutral.
Comfrey and American Elm Physical Information
Comfrey and American Elm physical information is very important for comparison. Comfrey height is 20.00 cm and width 90.00 cm whereas American Elm height is 3,900.00 cm and width 3,700.00 cm. The color specification of Comfrey and American Elm are as follows:
Comfrey flower color: White and Light Pink
Comfrey leaf color: Red, Green and Copper
American Elm flower color: Green
- American Elm leaf color: Light Green
Care of Comfrey and American Elm
Care of Comfrey and American Elm include pruning, fertilizers, watering etc. Comfrey pruning is done Cut or pinch the stems and Remove dead leaves and American Elm pruning is done Remove damaged leaves, Remove dead branches, Remove dead leaves, Remove dead or diseased plant parts and Remove deadheads. In summer Comfrey needs Lots of watering and in winter, it needs Average Water. Whereas, in summer American Elm needs Lots of watering and in winter, it needs Average Water.