Life Span
Perennial
Perennial
Type
Broadleaf Evergreen
Tree
Types
Symphytum officinale (common comfrey), Symphytum asperum (rough comfrey)
Honey Locust
Habitat
Cold Regions, stream banks
Woodland Garden Canopy
USDA Hardiness Zone
6-11
5-8
Sunset Zone
21,22
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
Upright/Erect
Flower Color
White, Light Pink
Rose, Violet
Flower Color Modifier
Bicolor
Bicolor
Fruit Color
Orange Red
Purple, Brown
Leaf Color in Spring
Red, Green, Copper
Red, Crimson, Bronze
Leaf Color in Summer
Green, Blue Green
Green, Blue Green
Leaf Color in Fall
Green, Blue Green
Yellow green
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
Type of Soil
Loam, Sand
Clay, Loam, Sand
The pH of Soil
Acidic, Neutral
Acidic, Neutral, Alkaline
Soil Drainage
Well drained
Average
Bloom Time
Late Spring, Early Summer, Summer
Spring, Late Spring
Tolerances
-
Pollution, Drought, Salt, 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
Average Water Needs, Needs a lot of water initially, occasional watering once established
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
Clay, 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
Cut limbs, Prune in winter, Prune up lowest branches, Remove branches, 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
Red blotch
Plant Tolerance
Shallow soil, Sun
Drought, Pollution, Salt, Soil Compaction
Flower Petal Number
Single
Single
Foliage Texture
Medium
Medium
Foliage Sheen
Glossy
Matte
Invasive
Sometimes
Sometimes
Attracts
Ants, Butterflies, pollinators
Birds, Butterflies
Allergy
Antibacterial, Peripheral Edema
Abdominal pain, Depression, Diarrhea, Digestive Problems, gastro-intestinal problems, Kidney Disease, Liver disease, Nausea, Vomiting, weakness
Aesthetic Uses
Cottage Garden, Showy Purposes
Showy Purposes
Beauty Benefits
Acne, Beautiful Skin, Reduce Bruises, Remove blemishes
Good for skin
Environmental Uses
Air purification, Fixes Nitrogen
Air purification, Shadow Tree, soil stabilisation
Medicinal Uses
Asthma, Diarrhea, Obesity, Osteoarthritis
Antispasmodic, Antivinous, Cancer, Cholagogue, Diuretic, Emetic, Emmoiliant, Eye Problems, Febrifuge, Laxative, Purgative, Tonic
Part of Plant Used
Leaves, Twigs
Flowers, Seeds, Wood
Other Uses
Used for its medicinal properties
Fibre, For making oil, Used as a dye, Used as essential oil, Used as fuel, Used for woodware
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, Street Trees
Botanical Name
Symphytum asperum
ROBINIA 'Purple Robe'
Common Name
Comfrey,Black Root, Blackwort, Bruisewort
Hybrid Black Locust, Purple Robe Locust
In Hindi
Blackwort
Black Locust Tree
In German
Blackwort
Schwarz Locust Tree
In French
Blackwort
Noir Arbre Locust
In Spanish
Blackwort
Negro del árbol de la langosta
In Greek
Blackwort
Μαύρο Locust Tree
In Portuguese
Blackwort
Árvore Locust Preto
In Polish
Blackwort
Robinii akacjowej Drzewo
In Latin
Blackwort
Locusta arbor Niger
Phylum
Magnoliophyta
Magnoliophyta
Class
Magnoliopsida
Magnoliopsida
Family
Boraginaceae
Fabaceae
Clade
Angiosperms, Eudicots, Rosids
Angiosperms, Eudicots, Rosids
Subfamily
Boraginoideae
Faboideae
Season and Care of Comfrey and Black Locust
Season and care of Comfrey and Black Locust is important to know. While considering everything about Comfrey and Black Locust Care, growing season is an essential factor. Comfrey season is Spring, Summer, Fall and Winter and Black Locust season is Spring, Summer, Fall and Winter. The type of soil for Comfrey is Loam, Sand and for Black Locust is Clay, Loam, Sand while the PH of soil for Comfrey is Acidic, Neutral and for Black Locust is Acidic, Neutral, Alkaline.
Comfrey and Black Locust Physical Information
Comfrey and Black Locust physical information is very important for comparison. Comfrey height is 20.00 cm and width 90.00 cm whereas Black Locust height is 1,524.00 cm and width 1,066.80 cm. The color specification of Comfrey and Black Locust are as follows:
Comfrey flower color: White and Light Pink
Comfrey leaf color: Red, Green and Copper
Black Locust flower color: Rose and Violet
- Black Locust leaf color: Red, Crimson and Bronze
Care of Comfrey and Black Locust
Care of Comfrey and Black Locust include pruning, fertilizers, watering etc. Comfrey pruning is done Cut or pinch the stems and Remove dead leaves and Black Locust pruning is done Cut limbs, Prune in winter, Prune up lowest branches, Remove branches, 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 Black Locust needs Lots of watering and in winter, it needs Average Water.