Life Span
Perennial
Perennial
Type
Broadleaf Evergreen
Tree
Origin
Europe, Russia
Mid-Atlantic United States, Southeastern United States, Central United States, South-Central United States
Types
Symphytum officinale (common comfrey), Symphytum asperum (rough comfrey)
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Habitat
Cold Regions, stream banks
bottomlands, Depression on prairies, ditches, Floodplains, Riverbanks, stream banks, Swamps
USDA Hardiness Zone
6-11
4-9
Sunset Zone
21,22
1a, 1b, 2a, 2b, 3a, 3b, 4, 5, 6, 7, 8, 9, 10, 11, 12, 13, 14, 15, 16, 17, 18, 19, 20, 21, 22, 23, 24
Habit
Upright/Erect
Oval or Rounded
Flower Color
White, Light Pink
Yellow, Brown
Flower Color Modifier
Bicolor
Bicolor
Fruit Color
Orange Red
Black
Leaf Color in Spring
Red, Green, Copper
Green, Light Green
Leaf Color in Summer
Green, Blue Green
Green, Light Green
Leaf Color in Fall
Green, Blue Green
Yellow, Light Yellow, Tan
Leaf Color in Winter
Red, Dark Green, Burgundy, Bronze
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Leaf Shape
Oval
Oval with a pointed tip and fine teeth along their edges
Plant Season
Spring, Summer, Fall, Winter
Spring, Summer, Fall, Winter
Sunlight
Full Sun, Partial Sun, Partial shade
Full Sun, Partial Sun
Type of Soil
Loam, Sand
Clay, Loam, Sand
The pH of Soil
Acidic, Neutral
Acidic, Neutral
Soil Drainage
Well drained
Average
Bloom Time
Late Spring, Early Summer, Summer
Spring
Tolerances
-
Wet Site, Pollution, Soil Compaction
Where to Plant?
Container, Ground
Ground
How to Plant?
Root Division, Transplanting
Seedlings
Plant Maintenance
Low
Low
Watering Requirements
Allow to dry out slightly between watering, Water daily during growing season
Requires a lot of watering, Requires regular watering
In Summer
Lots of watering
Lots of watering
In Spring
Moderate
Moderate
In Winter
Average Water
Average Water
Soil pH
Acidic, Neutral
Acidic, Neutral
Soil Type
Loam, Sand
Clay, Loam, Sand
Soil Drainage Capacity
Well drained
Average
Sun Exposure
Full Sun, Partial Sun, Partial shade
Full Sun, Partial Sun
Pruning
Cut or pinch the stems, Remove dead leaves
Prune in the late winter or spring, Remove dead or diseased plant parts, Shape and thin as needed
Fertilizers
14-14-14 Fertilizer, All-Purpose Liquid Fertilizer, can go long without fertilizers
All-Purpose Liquid Fertilizer, No need to fertilize every year
Pests and Diseases
Aphids, Stem spot
Aphids, Red blotch, Sawfly Larvae
Plant Tolerance
Shallow soil, Sun
Pollution, Soil Compaction, Wet Site
Flower Petal Number
Single
-
Foliage Texture
Medium
Medium
Foliage Sheen
Glossy
Matte
Attracts
Ants, Butterflies, pollinators
-
Allergy
Antibacterial, Peripheral Edema
Asthma
Aesthetic Uses
Cottage Garden, Showy Purposes
Showy Purposes
Beauty Benefits
Acne, Beautiful Skin, Reduce Bruises, Remove blemishes
-
Environmental Uses
Air purification, Fixes Nitrogen
Erosion control, Wildlife
Medicinal Uses
Asthma, Diarrhea, Obesity, Osteoarthritis
-
Part of Plant Used
Leaves, Twigs
Whole plant
Other Uses
Used for its medicinal properties
used for making roof trusses, poles, joists, piles, Used in construction, Used in Furniture
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
Botanical Name
Symphytum asperum
BETULA nigra
Common Name
Comfrey,Black Root, Blackwort, Bruisewort
River Birch
In Hindi
Blackwort
River Birch
In German
Blackwort
Fluss Birch
In French
Blackwort
Birch river
In Spanish
Blackwort
river Birch
In Greek
Blackwort
ποταμός Birch
In Portuguese
Blackwort
river Birch
In Polish
Blackwort
Rzeka Birch
In Latin
Blackwort
Betula
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 River Birch
Season and care of Comfrey and River Birch is important to know. While considering everything about Comfrey and River Birch Care, growing season is an essential factor. Comfrey season is Spring, Summer, Fall and Winter and River Birch season is Spring, Summer, Fall and Winter. The type of soil for Comfrey is Loam, Sand and for River Birch is Clay, Loam, Sand while the PH of soil for Comfrey is Acidic, Neutral and for River Birch is Acidic, Neutral.
Comfrey and River Birch Physical Information
Comfrey and River Birch physical information is very important for comparison. Comfrey height is 20.00 cm and width 90.00 cm whereas River Birch height is 1,220.00 cm and width 1,220.00 cm. The color specification of Comfrey and River Birch are as follows:
Comfrey flower color: White and Light Pink
Comfrey leaf color: Red, Green and Copper
River Birch flower color: Yellow and Brown
- River Birch leaf color: Green and Light Green
Care of Comfrey and River Birch
Care of Comfrey and River Birch include pruning, fertilizers, watering etc. Comfrey pruning is done Cut or pinch the stems and Remove dead leaves and River Birch pruning is done Prune in the late winter or spring, Remove dead or diseased plant parts and Shape and thin as needed. In summer Comfrey needs Lots of watering and in winter, it needs Average Water. Whereas, in summer River Birch needs Lots of watering and in winter, it needs Average Water.