Life Span
Perennial
Perennial
Type
Broadleaf Evergreen
Tree
Origin
Europe, Russia
Europe, Eastern Europe, Southern Europe, Russia/Siberia, Iran, Central Asia, Southern Asia, Western Asia, India, Nepal, China
Types
Symphytum officinale (common comfrey), Symphytum asperum (rough comfrey)
Black walnut
Number of Varieties
230
0
40000
👆🏻
Habitat
Cold Regions, stream banks
Cold Regions, Hills, Hillside
USDA Hardiness Zone
6-114-8
0
99
👆🏻
AHS Heat Zone
-
7-1
Sunset Zone
21,22
1a, 1b, 2a, 2b, 3a, 3b, 4, 5, 6, 7, 8, 9, 14, 15, 16, 17, 18, 19, 20, 21
Habit
Upright/Erect
Oval or Rounded
Plant Size
Minimum Height
20.00 cm1,220.00 cm
0
3900
👆🏻
Minimum Width
90.00 cm1,220.00 cm
0
6350
👆🏻
Plant Color
Flower Color
White, Light Pink
Yellow green
Flower Color Modifier
Bicolor
Bicolor
Fruit Color
Orange Red
Green, Brown
Leaf Color in Spring
Red, Green, Copper
Green, Copper
Leaf Color in Summer
Green, Blue Green
Dark Green
Leaf Color in Fall
Green, Blue Green
Dark Green, Yellow green
Leaf Color in Winter
Red, Dark Green, Burgundy, Bronze
-
Shape
Leaf Shape
Oval
Pinnate
Thorns
✔
✘
✔
✘
Plant Season
Spring, Summer, Fall, Winter
Spring, Summer, Fall
Growing Conditions
Sunlight
Full Sun, Partial Sun, Partial shade
Full Sun
Growth Rate
Medium
Medium
Type of Soil
Loam, Sand
Clay, Loam, Sand
The pH of Soil
Acidic, Neutral
Acidic, Neutral
Soil Drainage
Well drained
Well drained
Bloom Time
Late Spring, Early Summer, Summer
Late Spring, Early Summer
Repeat Bloomer
✔
✘
✔
✘
Tolerances
-
Drought, Frost
Where to Plant?
Container, Ground
Ground
How to Plant?
Root Division, Transplanting
Budding, Seedlings
Plant Maintenance
Low
Medium
Watering Plants
Watering Requirements
Allow to dry out slightly between watering, Water daily during growing season
Requires watering in the growing season, Water Deeply, Water when top layer of soil becomes dry
In Summer
Lots of watering
Lots of watering
In Spring
Moderate
Moderate
In Winter
Average Water
Average Water
Soil
Soil pH
Acidic, Neutral
Acidic, Neutral
Soil Type
Loam, Sand
Clay, Loam, Sand
Soil Drainage Capacity
Well drained
Well drained
Sun Exposure
Full Sun, Partial Sun, Partial shade
Full Sun
Pruning
Cut or pinch the stems, Remove dead leaves
In Early Autumn, Prune to stimulate growth, Remove dead leaves
Fertilizers
14-14-14 Fertilizer, All-Purpose Liquid Fertilizer, can go long without fertilizers
fertilize in spring, Nitrogen
Pests and Diseases
Aphids, Stem spot
Anthracnose, Armillaria mellea, Blight, Caterpillars, Crown gall, Crown rot, fungus, Powdery mildew, Red blotch
Plant Tolerance
Shallow soil, Sun
Drought, Frost
Flowers
Showy
Insignificant
Flower Petal Number
Single
-
Fruits
Showy Fruit
✔
✘
✔
✘
Edible Fruit
✔
✘
✔
✘
Fragrance
Fragrant Flower
✔
✘
✔
✘
Fragrant Fruit
✔
✘
✔
✘
Fragrant Leaf
✔
✘
✔
✘
Fragrant Bark/Stem
✔
✘
✔
✘
Showy Foliage
✔
✘
✔
✘
Showy Bark
✔
✘
✔
✘
Foliage Texture
Medium
Coarse
Foliage Sheen
Glossy
Glossy
Evergreen
✔
✘
✔
✘
Invasive
✔
✘
✔
✘
Self-Sowing
✔
✘
✔
✘
Attracts
Ants, Butterflies, pollinators
-
Allergy
Antibacterial, Peripheral Edema
Severe allergen
Uses
Aesthetic Uses
Cottage Garden, Showy Purposes
-
Beauty Benefits
Acne, Beautiful Skin, Reduce Bruises, Remove blemishes
Good for skin and hair
Edible Uses
✔
✘
✔
✘
Environmental Uses
Air purification, Fixes Nitrogen
Absorbs greenhouse gases, Absorbs huge amounts of CO2, Air purification, Amazing growth rate, Erosion control, Food for birds, Food for insects, Forms dense stands, Nesting sites for birds, Prevent Soil Erosion, Shadow Tree, Shelter for wildlife, Windbreak
Plant Benefits
Medicinal Uses
Asthma, Diarrhea, Obesity, Osteoarthritis
Anemia, Asthma, Cancer, Cough, Diarrhea, Menstrual Disorders, Urinary tract problems
Part of Plant Used
Leaves, Twigs
Fruits, Seeds
Other Uses
Used for its medicinal properties
Economic Purpose, Used as a dye, Used as firewood, Used As Food, Used for its medicinal properties
Used As Indoor Plant
✔
✘
✔
✘
Used As Outdoor Plant
✔
✘
✔
✘
Garden Design
Container, Feature Plant, Foundation, Groundcover, Hedges, Mixed Border, Tropical
Edible, Feature Plant, Shade Trees
Botanical Name
Symphytum asperum
JUGLANS regia
Common Name
Comfrey,Black Root, Blackwort, Bruisewort
English Walnut
In Hindi
Blackwort
अंग्रेजी अखरोट
In German
Blackwort
Englisch Walnut
In French
Blackwort
Anglais Noyer
In Spanish
Blackwort
Inglés nuez
In Greek
Blackwort
Αγγλικά Καρυδιά
In Portuguese
Blackwort
Inglês Walnut
In Polish
Blackwort
orzech włoski
In Latin
Blackwort
Nucis anglicus
Kingdom
Plantae
Plantae
Phylum
Magnoliophyta
Tracheophyta
Class
Magnoliopsida
Magnoliopsida
Order
Lamiales
Fagales
Family
Boraginaceae
Juglandaceae
Genus
Symphytum
Juglans
Clade
Angiosperms, Eudicots, Rosids
Angiosperms, Eudicots, Rosids
Tribe
-
Juglandeae
Subfamily
Boraginoideae
Juglandoideae
Number of Species
3521
1
27800
👆🏻