Life Span
Perennial
Perennial
Type
Broadleaf Evergreen
Tree
Origin
Europe, Russia
Northeastern United States, Mid-Atlantic United States, Southeastern United States, North-Central United States, Central United States, Canada
Types
Symphytum officinale (common comfrey), Symphytum asperum (rough comfrey)
Arrowwood Viburnum, American Cranberrybush, European Cranberrybush
Number of Varieties
22
0
40000
👆🏻
Habitat
Cold Regions, stream banks
Rocky areas, Stream side, Woodlands
USDA Hardiness Zone
6-112-8
0
99
👆🏻
AHS Heat Zone
-
8-1
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 cm370.00 cm
0
3900
👆🏻
Minimum Width
90.00 cm240.00 cm
0
6350
👆🏻
Plant Color
Flower Color
White, Light Pink
White
Flower Color Modifier
Bicolor
Bicolor
Fruit Color
Orange Red
Green, Light Yellow, Pink, Blue Violet, Black
Leaf Color in Spring
Red, Green, Copper
Green
Leaf Color in Summer
Green, Blue Green
Green
Leaf Color in Fall
Green, Blue Green
Red, Purple
Leaf Color in Winter
Red, Dark Green, Burgundy, Bronze
-
Shape
Leaf Shape
Oval
Ovate
Thorns
✔
✘
✔
✘
Plant Season
Spring, Summer, Fall, Winter
Spring, Summer, Fall
Growing Conditions
Sunlight
Full Sun, Partial Sun, Partial shade
Partial Sun, Partial shade
Growth Rate
Medium
-
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
Repeat Bloomer
✔
✘
✔
✘
Tolerances
-
Drought
Where to Plant?
Container, Ground
Ground
How to Plant?
Root Division, Transplanting
Seedlings
Plant Maintenance
Low
Medium
Watering Plants
Watering Requirements
Allow to dry out slightly between watering, Water daily during growing season
Do not water frequently
In Summer
Lots of watering
Ample Water
In Spring
Moderate
Average Water
In Winter
Average Water
Moderate
Soil
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
Partial Sun, Partial shade
Pruning
Cut or pinch the stems, Remove dead leaves
Cut limbs, Remove damaged leaves, Remove dead branches
Fertilizers
14-14-14 Fertilizer, All-Purpose Liquid Fertilizer, can go long without fertilizers
as it is a flowering plant, use high phosphorous content fertilizer
Pests and Diseases
Aphids, Stem spot
Downy mildew, fungus, Powdery mildew, Red blotch, Rust
Plant Tolerance
Shallow soil, Sun
Drought
Flowers
Showy
Showy
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
Medium
Foliage Sheen
Glossy
Matte
Evergreen
✔
✘
✔
✘
Invasive
✔
✘
✔
✘
Self-Sowing
✔
✘
✔
✘
Attracts
Ants, Butterflies, pollinators
Birds, Butterflies
Allergy
Antibacterial, Peripheral Edema
-
Uses
Aesthetic Uses
Cottage Garden, Showy Purposes
Showy Purposes
Beauty Benefits
Acne, Beautiful Skin, Reduce Bruises, Remove blemishes
-
Edible Uses
✔
✘
✔
✘
Environmental Uses
Air purification, Fixes Nitrogen
Food for birds, Wildlife, Windbreak
Plant Benefits
Medicinal Uses
Asthma, Diarrhea, Obesity, Osteoarthritis
Asthma, Cramps, Diuretic, Fever, Nerve sedative, Palpitation
Part of Plant Used
Leaves, Twigs
Flowers, Fruits
Other Uses
Used for its medicinal properties
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
Feature Plant, Foundation, Fruit / Fruit Tree, Hedges, Screening / Wind Break
Botanical Name
Symphytum asperum
VIBURNUM lentago
Common Name
Comfrey,Black Root, Blackwort, Bruisewort
Nannyberry
In Hindi
Blackwort
Nannyberry
In German
Blackwort
Nannyberry
In French
Blackwort
alisier
In Spanish
Blackwort
Nannyberry
In Greek
Blackwort
Nannyberry
In Portuguese
Blackwort
Nannyberry
In Polish
Blackwort
Nannyberry
In Latin
Blackwort
Nannyberry
Kingdom
Plantae
Plantae
Phylum
Magnoliophyta
Magnoliophyta
Class
Magnoliopsida
Magnoliopsida
Order
Lamiales
Dipsacales
Family
Boraginaceae
Caprifoliaceae
Genus
Symphytum
Viburnum
Clade
Angiosperms, Eudicots, Rosids
Angiosperms, Asterids, Eudicots
Tribe
-
-
Subfamily
Boraginoideae
-
Number of Species
3550
1
27800
👆🏻