Life Span
Perennial
Perennial
Type
Tree
Broadleaf Evergreen
Origin
North America, United States, Northwestern United States, Alaska, California, Canada
Europe, Russia
Types
-
Symphytum officinale (common comfrey), Symphytum asperum (rough comfrey)
Habitat
Lowland evergreen rainforest
Cold Regions, stream banks
USDA Hardiness Zone
4-7
6-11
Sunset Zone
3a, 3b, 4, 5, 6, 7, 14, 15, 16, 17
21,22
Habit
Pyramidal
Upright/Erect
Flower Color
Yellow, Red, Coral
White, Light Pink
Flower Color Modifier
Bicolor
Bicolor
Fruit Color
Brown
Orange Red
Leaf Color in Spring
Green, Dark Green
Red, Green, Copper
Leaf Color in Summer
Dark Green
Green, Blue Green
Leaf Color in Fall
Dark Green
Green, Blue Green
Leaf Color in Winter
-
Red, Dark Green, Burgundy, Bronze
Plant Season
Spring, Summer, Fall
Spring, Summer, Fall, Winter
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, Alkaline
Acidic, Neutral
Soil Drainage
Average
Well drained
Bloom Time
Early Spring
Late Spring, Early Summer, Summer
Tolerances
Maritime exposure, Salt water
-
Where to Plant?
Ground
Container, Ground
How to Plant?
Layering, Seedlings
Root Division, Transplanting
Plant Maintenance
Medium
Low
Watering Requirements
Average Water Needs
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 pH
Acidic, Neutral, Alkaline
Acidic, Neutral
Soil Type
Loam, Sand
Loam, Sand
Soil Drainage Capacity
Average
Well drained
Sun Exposure
Full Sun, Partial Sun, Partial shade
Full Sun, Partial Sun, Partial shade
Pruning
Remove damaged leaves, Remove dead branches, Remove dead leaves
Cut or pinch the stems, Remove dead leaves
Fertilizers
All-Purpose Liquid Fertilizer, Nitrogen
14-14-14 Fertilizer, All-Purpose Liquid Fertilizer, can go long without fertilizers
Pests and Diseases
-
Aphids, Stem spot
Plant Tolerance
Maritime exposure, Salt water
Shallow soil, Sun
Flowers
Insignificant
Showy
Flower Petal Number
-
Single
Foliage Texture
Medium
Medium
Foliage Sheen
Glossy
Glossy
Attracts
Insects
Ants, Butterflies, pollinators
Allergy
-
Antibacterial, Peripheral Edema
Aesthetic Uses
-
Cottage Garden, Showy Purposes
Beauty Benefits
Skin Problems
Acne, Beautiful Skin, Reduce Bruises, Remove blemishes
Environmental Uses
Air purification, Prevent Soil Erosion, Shadow Tree
Air purification, Fixes Nitrogen
Medicinal Uses
Anodyne, Appetizer, Astringent
Asthma, Diarrhea, Obesity, Osteoarthritis
Part of Plant Used
Flowers, Inner Bark, Sap
Leaves, Twigs
Other Uses
Used as a dye, used for making charcoal, Used for making informal hedge
Used for its medicinal properties
Used As Indoor Plant
No
No
Used As Outdoor Plant
Yes
Yes
Garden Design
Screening / Wind Break, Shade Trees
Container, Feature Plant, Foundation, Groundcover, Hedges, Mixed Border, Tropical
Botanical Name
ALNUS rubra
Symphytum asperum
Common Name
Oregon Alder, Red Alder
Comfrey,Black Root, Blackwort, Bruisewort
In Hindi
red alder
Blackwort
In German
rot-Erle
Blackwort
In French
aulne rouge
Blackwort
In Spanish
aliso rojo
Blackwort
In Greek
κόκκινη σκλήθρα
Blackwort
In Portuguese
amieiro vermelho
Blackwort
In Polish
czerwony olcha
Blackwort
In Latin
red alnus
Blackwort
Phylum
Magnoliophyta
Magnoliophyta
Class
Magnoliopsida
Magnoliopsida
Family
Betulaceae
Boraginaceae
Clade
Angiosperms, Eudicots, Rosids
Angiosperms, Eudicots, Rosids
Subfamily
-
Boraginoideae
Season and Care of Red Alder and Comfrey
Season and care of Red Alder and Comfrey is important to know. While considering everything about Red Alder and Comfrey Care, growing season is an essential factor. Red Alder season is Spring, Summer and Fall and Comfrey season is Spring, Summer and Fall. The type of soil for Red Alder is Loam, Sand and for Comfrey is Loam, Sand while the PH of soil for Red Alder is Acidic, Neutral, Alkaline and for Comfrey is Acidic, Neutral.
Red Alder and Comfrey Physical Information
Red Alder and Comfrey physical information is very important for comparison. Red Alder height is 1,370.00 cm and width 610.00 cm whereas Comfrey height is 20.00 cm and width 90.00 cm. The color specification of Red Alder and Comfrey are as follows:
Red Alder flower color: Yellow, Red and Coral
Red Alder leaf color: Green and Dark Green
Comfrey flower color: White and Light Pink
- Comfrey leaf color: Red, Green and Copper
Care of Red Alder and Comfrey
Care of Red Alder and Comfrey include pruning, fertilizers, watering etc. Red Alder pruning is done Remove damaged leaves, Remove dead branches and Remove dead leaves and Comfrey pruning is done Cut or pinch the stems and Remove dead leaves. In summer Red Alder needs Lots of watering and in winter, it needs Average Water. Whereas, in summer Comfrey needs Lots of watering and in winter, it needs Average Water.