Life Span
Perennial
Perennial
Type
Broadleaf Evergreen
Tree
Origin
Europe, Russia
North America, United States, Northwestern United States, Alaska, California, Canada
Types
Symphytum officinale (common comfrey), Symphytum asperum (rough comfrey)
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Habitat
Cold Regions, stream banks
Lowland evergreen rainforest
USDA Hardiness Zone
6-11
4-7
Sunset Zone
21,22
3a, 3b, 4, 5, 6, 7, 14, 15, 16, 17
Habit
Upright/Erect
Pyramidal
Flower Color
White, Light Pink
Yellow, Red, Coral
Flower Color Modifier
Bicolor
Bicolor
Fruit Color
Orange Red
Brown
Leaf Color in Spring
Red, Green, Copper
Green, Dark Green
Leaf Color in Summer
Green, Blue Green
Dark Green
Leaf Color in Fall
Green, Blue Green
Dark Green
Leaf Color in Winter
Red, Dark Green, Burgundy, Bronze
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Plant Season
Spring, Summer, Fall, Winter
Spring, Summer, Fall
Sunlight
Full Sun, Partial Sun, Partial shade
Full Sun, Partial Sun, Partial shade
Type of Soil
Loam, Sand
Loam, Sand
The pH of Soil
Acidic, Neutral
Acidic, Neutral, Alkaline
Soil Drainage
Well drained
Average
Bloom Time
Late Spring, Early Summer, Summer
Early Spring
Tolerances
-
Maritime exposure, Salt water
Where to Plant?
Container, Ground
Ground
How to Plant?
Root Division, Transplanting
Layering, 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
Acidic, Neutral, Alkaline
Soil Type
Loam, Sand
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
All-Purpose Liquid Fertilizer, Nitrogen
Pests and Diseases
Aphids, Stem spot
-
Plant Tolerance
Shallow soil, Sun
Maritime exposure, Salt water
Flowers
Showy
Insignificant
Flower Petal Number
Single
-
Foliage Texture
Medium
Medium
Foliage Sheen
Glossy
Glossy
Attracts
Ants, Butterflies, pollinators
Insects
Allergy
Antibacterial, Peripheral Edema
-
Aesthetic Uses
Cottage Garden, Showy Purposes
-
Beauty Benefits
Acne, Beautiful Skin, Reduce Bruises, Remove blemishes
Skin Problems
Environmental Uses
Air purification, Fixes Nitrogen
Air purification, Prevent Soil Erosion, Shadow Tree
Medicinal Uses
Asthma, Diarrhea, Obesity, Osteoarthritis
Anodyne, Appetizer, Astringent
Part of Plant Used
Leaves, Twigs
Flowers, Inner Bark, Sap
Other Uses
Used for its medicinal properties
Used as a dye, used for making charcoal, Used for making informal hedge
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
ALNUS rubra
Common Name
Comfrey,Black Root, Blackwort, Bruisewort
Oregon Alder, Red Alder
In Hindi
Blackwort
red alder
In German
Blackwort
rot-Erle
In French
Blackwort
aulne rouge
In Spanish
Blackwort
aliso rojo
In Greek
Blackwort
κόκκινη σκλήθρα
In Portuguese
Blackwort
amieiro vermelho
In Polish
Blackwort
czerwony olcha
In Latin
Blackwort
red alnus
Phylum
Magnoliophyta
Magnoliophyta
Class
Magnoliopsida
Magnoliopsida
Family
Boraginaceae
Betulaceae
Clade
Angiosperms, Eudicots, Rosids
Angiosperms, Eudicots, Rosids
Subfamily
Boraginoideae
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Season and Care of Comfrey and Red Alder
Season and care of Comfrey and Red Alder is important to know. While considering everything about Comfrey and Red Alder Care, growing season is an essential factor. Comfrey season is Spring, Summer, Fall and Winter and Red Alder season is Spring, Summer, Fall and Winter. The type of soil for Comfrey is Loam, Sand and for Red Alder is Loam, Sand while the PH of soil for Comfrey is Acidic, Neutral and for Red Alder is Acidic, Neutral, Alkaline.
Comfrey and Red Alder Physical Information
Comfrey and Red Alder physical information is very important for comparison. Comfrey height is 20.00 cm and width 90.00 cm whereas Red Alder height is 1,370.00 cm and width 610.00 cm. The color specification of Comfrey and Red Alder are as follows:
Comfrey flower color: White and Light Pink
Comfrey leaf color: Red, Green and Copper
Red Alder flower color: Yellow, Red and Coral
- Red Alder leaf color: Green and Dark Green
Care of Comfrey and Red Alder
Care of Comfrey and Red Alder include pruning, fertilizers, watering etc. Comfrey pruning is done Cut or pinch the stems and Remove dead leaves and Red Alder 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 Red Alder needs Lots of watering and in winter, it needs Average Water.