Life Span
Perennial
Perennial
Type
Broadleaf Evergreen
Tree
Origin
Europe, Russia
North America
Types
Symphytum officinale (common comfrey), Symphytum asperum (rough comfrey)
Water elm
Habitat
Cold Regions, stream banks
Floodplains, Hillside, stream banks, Swamps, Upland
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
-
Leaf Shape
Oval
Oblique base
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
Tolerances
-
Cold climate, Drought, Pollution, Salt
Where to Plant?
Container, Ground
Ground
How to Plant?
Root Division, Transplanting
Rooted stem cutting, Seedlings, Stem Planting
Plant Maintenance
Low
Low
Watering Requirements
Allow to dry out slightly between watering, Water daily during growing season
Average Water Needs, Requires regular watering, Requires watering in the growing season, Water Deeply
In Summer
Lots of watering
Ample Water
In Spring
Moderate
Average Water
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 dead branches, Remove dead or diseased plant parts, Remove hanging branches
Fertilizers
14-14-14 Fertilizer, All-Purpose Liquid Fertilizer, can go long without fertilizers
Fertilize every year, fertilize in growing season, Nitrogen, Phosphorous, Potassium
Pests and Diseases
Aphids, Stem spot
Bark beetles, Beetles, Borers, Mites, Moth, Red blotch, Scale
Plant Tolerance
Shallow soil, Sun
Cold climate, Drought, Salt
Flowers
Showy
Insignificant
Flower Petal Number
Single
Single
Foliage Texture
Medium
Medium
Foliage Sheen
Glossy
Matte
Attracts
Ants, Butterflies, pollinators
-
Allergy
Antibacterial, Peripheral Edema
allergic reaction, Asthma
Aesthetic Uses
Cottage Garden, Showy Purposes
Landscape Designing
Beauty Benefits
Acne, Beautiful Skin, Reduce Bruises, Remove blemishes
-
Environmental Uses
Air purification, Fixes Nitrogen
Absorbs greenhouse gases, Absorbs huge amounts of CO2, Air purification, Food for birds, Forms dense stands, Nesting sites for birds, Prevent Soil Erosion, Shelter for wildlife, Wildlife
Medicinal Uses
Asthma, Diarrhea, Obesity, Osteoarthritis
Antispasmodic, Astringent
Part of Plant Used
Leaves, Twigs
Bark, Stem, Tree trunks, Wood
Other Uses
Used for its medicinal properties
Used as firewood, Used for woodware, Used in biomass, Used in construction, Used in Furniture, Used in paper industry, Used in pulpwood and lumber production, Wood is used for making furniture, Wood is used for ship building, Wood is used fore making tools, Wood is used in construction, Wood log is used in making fences
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
Common Name
Comfrey,Black Root, Blackwort, Bruisewort
American Elm
In Hindi
Blackwort
अमेरिकी एल्म
In German
Blackwort
amerikanische Ulme
In French
Blackwort
orme d'Amérique
In Spanish
Blackwort
olmo americano
In Greek
Blackwort
American Elm
In Portuguese
Blackwort
olmo americano
In Polish
Blackwort
Amerykański wiązu
In Latin
Blackwort
Latin ulmo
Phylum
Magnoliophyta
Magnoliophyta
Class
Magnoliopsida
Magnoliopsida
Family
Boraginaceae
Ulmaceae
Clade
Angiosperms, Eudicots, Rosids
Angiosperms, Eudicots, Rosids
Subfamily
Boraginoideae
-
Season and Care of Comfrey and Elm
Season and care of Comfrey and Elm is important to know. While considering everything about Comfrey and Elm Care, growing season is an essential factor. Comfrey season is Spring, Summer, Fall and Winter and Elm season is Spring, Summer, Fall and Winter. The type of soil for Comfrey is Loam, Sand and for Elm is Loam while the PH of soil for Comfrey is Acidic, Neutral and for Elm is Acidic, Neutral.
Comfrey and Elm Physical Information
Comfrey and Elm physical information is very important for comparison. Comfrey height is 20.00 cm and width 90.00 cm whereas Elm height is 1,830.00 cm and width 910.00 cm. The color specification of Comfrey and Elm are as follows:
Care of Comfrey and Elm
Care of Comfrey and Elm include pruning, fertilizers, watering etc. Comfrey pruning is done Cut or pinch the stems and Remove dead leaves and Elm pruning is done Remove dead branches, Remove dead or diseased plant parts and Remove hanging branches. In summer Comfrey needs Lots of watering and in winter, it needs Average Water. Whereas, in summer Elm needs Ample Water and in winter, it needs Average Water.