Life Span
Perennial
Perennial
Type
Tree
Broadleaf Evergreen
Origin
Europe, Northern Africa, Western Asia
Europe, Russia
Types
Hazelnut, Corylus
Symphytum officinale (common comfrey), Symphytum asperum (rough comfrey)
Number of Varieties
252
0
40000
👆🏻
Habitat
Lower slopes, Moist woods, Slopes
Cold Regions, stream banks
USDA Hardiness Zone
4-86-11
0
99
👆🏻
AHS Heat Zone
8-1
-
Sunset Zone
2a, 2b, 3a, 3b, 4, 5, 6, 7, 8, 9, 14, 15, 16, 17, 18, 19, 20
21,22
Habit
Oval or Rounded
Upright/Erect
Plant Size
Minimum Height
370.00 cm20.00 cm
0
3900
👆🏻
Minimum Width
300.00 cm90.00 cm
0
6350
👆🏻
Plant Color
Flower Color
Yellow
White, Light Pink
Flower Color Modifier
Bicolor
Bicolor
Fruit Color
Brown
Orange Red
Leaf Color in Spring
Green
Red, Green, Copper
Leaf Color in Summer
Green, Dark Green
Green, Blue Green
Leaf Color in Fall
Yellow, Green, Brown
Green, Blue Green
Leaf Color in Winter
-
Red, Dark Green, Burgundy, Bronze
Shape
Leaf Shape
Cordate
Oval
Thorns
✔
✘
✔
✘
Plant Season
Spring, Summer, Fall
Spring, Summer, Fall, Winter
Growing Conditions
Sunlight
Full Sun, Partial Sun
Full Sun, Partial Sun, Partial shade
Growth Rate
Medium
Medium
Type of Soil
Clay, Loam, Sand
Loam, Sand
The pH of Soil
Neutral, Alkaline
Acidic, Neutral
Soil Drainage
Average
Well drained
Bloom Time
Early Spring, Spring, Late Winter
Late Spring, Early Summer, Summer
Repeat Bloomer
✔
✘
✔
✘
Tolerances
-
-
Where to Plant?
Ground
Container, Ground
How to Plant?
Budding, Seedlings
Root Division, Transplanting
Plant Maintenance
Medium
Low
Watering Plants
Watering Requirements
Do not water frequently, Needs less watering
Allow to dry out slightly between watering, Water daily during growing season
In Summer
Lots of watering
Lots of watering
In Spring
Moderate
Moderate
In Winter
Average Water
Average Water
Soil
Soil pH
Neutral, Alkaline
Acidic, Neutral
Soil Type
Clay, Loam, Sand
Loam, Sand
Soil Drainage Capacity
Average
Well drained
Sun Exposure
Full Sun, Partial Sun
Full Sun, Partial Sun, Partial shade
Pruning
Remove damaged leaves, Remove dead branches, Remove dead leaves
Cut or pinch the stems, Remove dead leaves
Fertilizers
All-Purpose Liquid Fertilizer
14-14-14 Fertilizer, All-Purpose Liquid Fertilizer, can go long without fertilizers
Pests and Diseases
Red blotch
Aphids, Stem spot
Plant Tolerance
Drought
Shallow soil, Sun
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
Coarse
Medium
Foliage Sheen
Matte
Glossy
Evergreen
✔
✘
✔
✘
Invasive
Sometimes
Sometimes
Self-Sowing
✔
✘
✔
✘
Attracts
-
Ants, Butterflies, pollinators
Allergy
-
Antibacterial, Peripheral Edema
Uses
Aesthetic Uses
-
Cottage Garden, Showy Purposes
Beauty Benefits
-
Acne, Beautiful Skin, Reduce Bruises, Remove blemishes
Edible Uses
✔
✘
✔
✘
Environmental Uses
Air purification
Air purification, Fixes Nitrogen
Plant Benefits
Medicinal Uses
antihelmintic, Astringent, Diaphoretic, Febrifuge, Nutrients, Nutritive
Asthma, Diarrhea, Obesity, Osteoarthritis
Part of Plant Used
Seeds
Leaves, Twigs
Other Uses
Basketary, Cosmetics, used for making charcoal
Used for its medicinal properties
Used As Indoor Plant
✔
✘
✔
✘
Used As Outdoor Plant
✔
✘
✔
✘
Garden Design
Edible, Foundation, Fruit / Fruit Tree, Hedges, Mixed Border, Screening / Wind Break
Container, Feature Plant, Foundation, Groundcover, Hedges, Mixed Border, Tropical
Botanical Name
CORYLUS avellana 'Rote Zellernuss'
Symphytum asperum
Common Name
Common Filbert, Redleaf Filbert
Comfrey,Black Root, Blackwort, Bruisewort
In Hindi
हेज़लनट
Blackwort
In German
Haselnuss
Blackwort
In French
aveline
Blackwort
In Spanish
avellana
Blackwort
In Greek
φουντούκι
Blackwort
In Portuguese
avelã
Blackwort
In Polish
leszczyna
Blackwort
In Latin
Filbert
Blackwort
Kingdom
Plantae
Plantae
Phylum
Tracheophyta
Magnoliophyta
Class
Magnoliopsida
Magnoliopsida
Order
Fagales
Lamiales
Family
Betulaceae
Boraginaceae
Genus
Corylus
Symphytum
Clade
Angiosperms, Eudicots, Rosids
Angiosperms, Eudicots, Rosids
Tribe
-
-
Subfamily
-
Boraginoideae
Number of Species
1535
1
27800
👆🏻