Life Span
Perennial
Perennial
Type
Tree
Broadleaf Evergreen
Origin
North America
Europe, Russia
Types
Bergmann's Elm, Chestnut-leafed Elm, Hangzhou Elm
Symphytum officinale (common comfrey), Symphytum asperum (rough comfrey)
Number of Varieties
1752
0
40000
👆🏻
Habitat
Woodland Garden Canopy
Cold Regions, stream banks
USDA Hardiness Zone
3-96-11
0
99
👆🏻
AHS Heat Zone
9-1
-
Sunset Zone
1a, 1b, 2a, 2b, 3a, 3b, 4, 5, 6, 7, 8, 9, 10, 11, 14, 15, 16, 17, 18, 19, 20, 21
21,22
Habit
Upright/Erect
Upright/Erect
Plant Size
Minimum Height
3,900.00 cm20.00 cm
0
3900
👆🏻
Minimum Width
3,700.00 cm90.00 cm
0
6350
👆🏻
Plant Color
Flower Color
Green
White, Light Pink
Flower Color Modifier
Bicolor
Bicolor
Fruit Color
Tan
Orange Red
Leaf Color in Spring
Light Green
Red, Green, Copper
Leaf Color in Summer
Dark Green
Green, Blue Green
Leaf Color in Fall
Light Yellow
Green, Blue Green
Leaf Color in Winter
-
Red, Dark Green, Burgundy, Bronze
Shape
Leaf Shape
Ovate
Oval
Thorns
✔
✘
✔
✘
Plant Season
Spring, Summer, Fall, Winter
Spring, Summer, Fall, Winter
Growing Conditions
Sunlight
Full 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
Average
Well drained
Bloom Time
Early Spring
Late Spring, Early Summer, Summer
Repeat Bloomer
✔
✘
✔
✘
Tolerances
Pollution
-
Where to Plant?
Ground
Container, Ground
How to Plant?
Budding, Grafting, Seedlings, Semi-hardwood cuttings, Softwood cuttings
Root Division, Transplanting
Plant Maintenance
Medium
Low
Watering Plants
Watering Requirements
Average Water Needs, Do Not over Water, Requires regular watering
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
Acidic, Neutral
Soil Type
Loam
Loam, Sand
Soil Drainage Capacity
Average
Well drained
Sun Exposure
Full Sun
Full Sun, Partial Sun, Partial shade
Pruning
Remove damaged leaves, Remove dead branches, Remove dead leaves, Remove dead or diseased plant parts, Remove deadheads
Cut or pinch the stems, Remove dead leaves
Fertilizers
Complete balanced fertilizer, fertilize in spring
14-14-14 Fertilizer, All-Purpose Liquid Fertilizer, can go long without fertilizers
Pests and Diseases
Red blotch
Aphids, Stem spot
Plant Tolerance
Pollution
Shallow soil, Sun
Flowers
✔
✘
✔
✘
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
Matte
Glossy
Evergreen
✔
✘
✔
✘
Invasive
✔
✘
✔
✘
Self-Sowing
✔
✘
✔
✘
Attracts
Birds, Butterflies
Ants, Butterflies, pollinators
Allergy
Pollen
Antibacterial, Peripheral Edema
Uses
Aesthetic Uses
-
Cottage Garden, Showy Purposes
Beauty Benefits
Good for skin and hair
Acne, Beautiful Skin, Reduce Bruises, Remove blemishes
Edible Uses
✔
✘
✔
✘
Environmental Uses
Air purification, Nesting sites for birds, Shadow Tree
Air purification, Fixes Nitrogen
Plant Benefits
Medicinal Uses
Antispasmodic, Astringent, Birthing aid, Haemostatic, Salve
Asthma, Diarrhea, Obesity, Osteoarthritis
Part of Plant Used
Bark, Fibre, Leaves
Leaves, Twigs
Other Uses
Container, String, Used for woodware, Used in paper industry
Used for its medicinal properties
Used As Indoor Plant
✔
✘
✔
✘
Used As Outdoor Plant
✔
✘
✔
✘
Garden Design
Feature Plant, Shade Trees, Street Trees
Container, Feature Plant, Foundation, Groundcover, Hedges, Mixed Border, Tropical
Botanical Name
ULMUS americana 'Augustine'
Symphytum asperum
Common Name
American Elm, Augustine Elm
Comfrey,Black Root, Blackwort, Bruisewort
In Hindi
American Elm Tree
Blackwort
In German
Amerikanische Ulme
Blackwort
In French
Américaine Elm Tree
Blackwort
In Spanish
Olmo Americano Árbol
Blackwort
In Greek
American Elm Tree
Blackwort
In Portuguese
Árvore de olmo americano
Blackwort
In Polish
Amerykańska Elm Tree
Blackwort
In Latin
Latin ulmo
Blackwort
Kingdom
Plantae
Plantae
Phylum
Magnoliophyta
Magnoliophyta
Class
Magnoliopsida
Magnoliopsida
Order
Urticales
Lamiales
Family
Ulmaceae
Boraginaceae
Genus
Ulmus
Symphytum
Clade
Angiosperms, Eudicots, Rosids
Angiosperms, Eudicots, Rosids
Tribe
-
-
Subfamily
-
Boraginoideae
Number of Species
635
1
27800
👆🏻