Life Span
Perennial
Biennial
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)
Yellow Birch, Paper Birch, River Birch
Habitat
Cold Regions, stream banks
Hills, Moist Soils
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
-
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
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
Medium
Watering Requirements
Allow to dry out slightly between watering, Water daily during growing season
Requires watering in the growing season, Water daily during growing season, Water Deeply, Water more frequently during periods of extreme drought
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
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
Remove branches, Remove damaged leaves, Remove dead branches, Remove dead leaves, Remove dead or diseased plant parts, Remove hanging branches
Fertilizers
14-14-14 Fertilizer, All-Purpose Liquid Fertilizer, can go long without fertilizers
All-Purpose Liquid Fertilizer, fertilize twice a year, Nitrogen
Pests and Diseases
Aphids, Stem spot
Red blotch
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
Ants, Aphids, Birds
Allergy
Antibacterial, Peripheral Edema
-
Aesthetic Uses
Cottage Garden, Showy Purposes
-
Beauty Benefits
Acne, Beautiful Skin, Reduce Bruises, Remove blemishes
Good for skin
Environmental Uses
Air purification, Fixes Nitrogen
Air purification, Nesting sites for birds, Shadow Tree, Shelter for wildlife, Wildlife
Medicinal Uses
Asthma, Diarrhea, Obesity, Osteoarthritis
Antibacterial, anti-inflammatory, Arthritis, Boils, bowel syndrome, Combats Stress, Diarrhea, Dysentry, Heart problems, Kidney Stones, Osteoarthritis, Skin Disorders, Urinary tract problems
Part of Plant Used
Leaves, Twigs
Bark, Leaves, Sap
Other Uses
Used for its medicinal properties
Medicinal oil, Used as essential oil
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 'Studetec'
Common Name
Comfrey,Black Root, Blackwort, Bruisewort
Black Birch, River Birch, Tecumseh Compact River Birch
In Hindi
Blackwort
काले बर्च वृक्ष
In German
Blackwort
Schwarze Birke
In French
Blackwort
Noir Bouleau
In Spanish
Blackwort
Negro del árbol de abedul
In Greek
Blackwort
Μαύρο Birch Tree
In Portuguese
Blackwort
Bétula Preto
In Polish
Blackwort
Czarny Brzoza
In Latin
Blackwort
Niger Caerulus
Phylum
Magnoliophyta
Magnoliophyta
Class
Magnoliopsida
Magnoliopsida
Family
Boraginaceae
Betulaceae
Clade
Angiosperms, Eudicots, Rosids
Angiosperms, Eudicots, Rosids
Subfamily
Boraginoideae
-
Season and Care of Comfrey and Black Birch
Season and care of Comfrey and Black Birch is important to know. While considering everything about Comfrey and Black Birch Care, growing season is an essential factor. Comfrey season is Spring, Summer, Fall and Winter and Black Birch season is Spring, Summer, Fall and Winter. The type of soil for Comfrey is Loam, Sand and for Black Birch is Clay, Loam while the PH of soil for Comfrey is Acidic, Neutral and for Black Birch is Acidic, Neutral.
Comfrey and Black Birch Physical Information
Comfrey and Black Birch physical information is very important for comparison. Comfrey height is 20.00 cm and width 90.00 cm whereas Black Birch height is 2,133.60 cm and width 762.00 cm. The color specification of Comfrey and Black Birch are as follows:
Comfrey flower color: White and Light Pink
Comfrey leaf color: Red, Green and Copper
Black Birch flower color: Yellow and Brown
- Black Birch leaf color: Green and Light Green
Care of Comfrey and Black Birch
Care of Comfrey and Black Birch include pruning, fertilizers, watering etc. Comfrey pruning is done Cut or pinch the stems and Remove dead leaves and Black Birch pruning is done Remove branches, Remove damaged leaves, Remove dead branches, Remove dead leaves, Remove dead or diseased plant parts and Remove hanging branches. In summer Comfrey needs Lots of watering and in winter, it needs Average Water. Whereas, in summer Black Birch needs Lots of watering and in winter, it needs Average Water.