Life Span
Perennial
Perennial
Type
Broadleaf Evergreen
Tree
Origin
Europe, Russia
Northeastern United States, Mid-Atlantic United States, Southeastern United States, Central United States, Canada, Mexico
Types
Symphytum officinale (common comfrey), Symphytum asperum (rough comfrey)
Plains Cottonwood, Rio Grande cottonwood
Habitat
Cold Regions, stream banks
bottomlands, Floodplain, Hardwood forests, Riverbanks
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
Red, Green
Flower Color Modifier
Bicolor
Bicolor
Fruit Color
Orange Red
White
Leaf Color in Spring
Red, Green, Copper
Green, Gray
Leaf Color in Summer
Green, Blue Green
Green
Leaf Color in Fall
Green, Blue Green
Yellow
Leaf Color in Winter
Red, Dark Green, Burgundy, Bronze
-
Leaf Shape
Oval
Toothed curved and flat petiole
Plant Season
Spring, Summer, Fall, Winter
Summer, Fall
Sunlight
Full Sun, Partial Sun, Partial shade
Full Sun
Growth Rate
Medium
Very Fast
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
Early Spring
Tolerances
-
Drought, Soil Compaction, Wet Site
Where to Plant?
Container, Ground
Ground
How to Plant?
Root Division, Transplanting
Seedlings, Stem Planting
Plant Maintenance
Low
Low
Watering Requirements
Allow to dry out slightly between watering, Water daily during growing season
Keep ground moist, Requires regular watering, Requires watering in the growing season, Water daily during growing season, Water Deeply, Water more in summer
In Summer
Lots of watering
Ample Water
In Spring
Moderate
Ample Water
In Winter
Average Water
Average Water
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
Pruning
Cut or pinch the stems, Remove dead leaves
Remove dead branches, Remove hanging branches
Fertilizers
14-14-14 Fertilizer, All-Purpose Liquid Fertilizer, can go long without fertilizers
fertilize in growing season, Nitrogen
Pests and Diseases
Aphids, Stem spot
Aphids, Borers, Caterpillars, Insects
Plant Tolerance
Shallow soil, Sun
Drought, Soil Compaction, Wet Site
Flower Petal Number
Single
-
Foliage Texture
Medium
Medium
Foliage Sheen
Glossy
Glossy
Invasive
Sometimes
Sometimes
Attracts
Ants, Butterflies, pollinators
-
Allergy
Antibacterial, Peripheral Edema
Hay fever, Headache, Runny nose, sneezing
Aesthetic Uses
Cottage Garden, Showy Purposes
Landscape Designing
Beauty Benefits
Acne, Beautiful Skin, Reduce Bruises, Remove blemishes
-
Environmental Uses
Air purification, Fixes Nitrogen
Air purification, Forms dense stands, Prevent Soil Erosion, Shadow Tree, Shelter for wildlife, Wildlife, Windbreak
Medicinal Uses
Asthma, Diarrhea, Obesity, Osteoarthritis
Anodyne, Anthelmintic, anti-inflammatory, Febrifuge
Part of Plant Used
Leaves, Twigs
Inner Bark, Leaves, Seeds
Other Uses
Used for its medicinal properties
Biomass for fuel, Used as firewood, Used As Food
Used As Indoor Plant
No
No
Used As Outdoor Plant
Yes
Yes
Garden Design
Container, Feature Plant, Foundation, Groundcover, Hedges, Mixed Border, Tropical
Screening / Wind Break, Shade Trees
Botanical Name
Symphytum asperum
POPULUS deltoides
Common Name
Comfrey,Black Root, Blackwort, Bruisewort
Eastern Cottonwood
In Hindi
Blackwort
Eastern Cottonwood
In German
Blackwort
Eastern Cottonwood
In French
Blackwort
Cottonwood Orient
In Spanish
Blackwort
Cottonwood del Este
In Greek
Blackwort
Ανατολική Cottonwood
In Portuguese
Blackwort
Cottonwood Oriental
In Polish
Blackwort
Eastern Cottonwood
In Latin
Blackwort
Orientalium Poplar
Phylum
Magnoliophyta
Anthophyta
Class
Magnoliopsida
Dicotyledonae
Family
Boraginaceae
Salicaceae
Clade
Angiosperms, Eudicots, Rosids
Angiosperms, Eudicots, Rosids
Subfamily
Boraginoideae
Salicoideae
Season and Care of Comfrey and Eastern Cottonwood
Season and care of Comfrey and Eastern Cottonwood is important to know. While considering everything about Comfrey and Eastern Cottonwood Care, growing season is an essential factor. Comfrey season is Spring, Summer, Fall and Winter and Eastern Cottonwood season is Spring, Summer, Fall and Winter. The type of soil for Comfrey is Loam, Sand and for Eastern Cottonwood is Loam, Sand while the PH of soil for Comfrey is Acidic, Neutral and for Eastern Cottonwood is Acidic, Neutral.
Comfrey and Eastern Cottonwood Physical Information
Comfrey and Eastern Cottonwood physical information is very important for comparison. Comfrey height is 20.00 cm and width 90.00 cm whereas Eastern Cottonwood height is 3,050.00 cm and width 2,130.00 cm. The color specification of Comfrey and Eastern Cottonwood are as follows:
Comfrey flower color: White and Light Pink
Comfrey leaf color: Red, Green and Copper
Eastern Cottonwood flower color: Red and Green
- Eastern Cottonwood leaf color: Green and Gray
Care of Comfrey and Eastern Cottonwood
Care of Comfrey and Eastern Cottonwood include pruning, fertilizers, watering etc. Comfrey pruning is done Cut or pinch the stems and Remove dead leaves and Eastern Cottonwood pruning is done Remove dead branches and Remove hanging branches. In summer Comfrey needs Lots of watering and in winter, it needs Average Water. Whereas, in summer Eastern Cottonwood needs Ample Water and in winter, it needs Average Water.