Life Span
Perennial
Perennial
Type
Fern
Broadleaf Evergreen
Origin
Northeastern United States, Eastern Asia
Europe, Russia
Types
Osmunda claytoniana
Symphytum officinale (common comfrey), Symphytum asperum (rough comfrey)
Number of Varieties
22
0
40000
👆🏻
Habitat
Forest margins, Roadsides, Terrestrial
Cold Regions, stream banks
USDA Hardiness Zone
2-96-11
0
99
👆🏻
AHS Heat Zone
8-1
-
Sunset Zone
1a, 1b, 2a, 2b, 3a, 3b, 4, 5, 6
21,22
Habit
Upright/Erect
Upright/Erect
Plant Size
Minimum Height
60.00 cm20.00 cm
0
3900
👆🏻
Minimum Width
60.00 cm90.00 cm
0
6350
👆🏻
Plant Color
Flower Color
-
White, Light Pink
Flower Color Modifier
Bicolor
Bicolor
Fruit Color
-
Orange Red
Leaf Color in Spring
Green
Red, Green, Copper
Leaf Color in Summer
Green
Green, Blue Green
Leaf Color in Fall
Green
Green, Blue Green
Leaf Color in Winter
-
Red, Dark Green, Burgundy, Bronze
Shape
Leaf Shape
Lance shaped
Oval
Thorns
✔
✘
✔
✘
Plant Season
Spring, Summer, Fall
Spring, Summer, Fall, Winter
Growing Conditions
Sunlight
Full Sun
Full Sun, Partial Sun, Partial shade
Growth Rate
Fast
Medium
Type of Soil
Loam
Loam, Sand
The pH of Soil
Acidic
Acidic, Neutral
Soil Drainage
Well drained
Well drained
Bloom Time
-
Late Spring, Early Summer, Summer
Repeat Bloomer
✔
✘
✔
✘
Tolerances
-
-
Where to Plant?
Ground
Container, Ground
How to Plant?
Divison, Spores
Root Division, Transplanting
Plant Maintenance
Medium
Low
Watering Plants
Watering Requirements
Water Deeply, Water when soil is dry
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
Acidic
Acidic, Neutral
Soil Type
Loam
Loam, Sand
Soil Drainage Capacity
Well drained
Well drained
Sun Exposure
Partial Sun
Full Sun, Partial Sun, Partial shade
Pruning
Remove damaged leaves, Remove dead branches, Remove dead leaves, Shape and thin as needed
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
Mealybugs
Aphids, Stem spot
Plant Tolerance
Drought
Shallow soil, Sun
Flowers
-
Showy
Flower Petal Number
Single
Single
Fruits
Showy Fruit
✔
✘
✔
✘
Edible Fruit
✔
✘
✔
✘
Fragrance
Fragrant Flower
✔
✘
✔
✘
Fragrant Fruit
✔
✘
✔
✘
Fragrant Leaf
✔
✘
✔
✘
Fragrant Bark/Stem
✔
✘
✔
✘
Showy Foliage
✔
✘
✔
✘
Showy Bark
✔
✘
✔
✘
Foliage Texture
Fine
Medium
Foliage Sheen
Matte
Glossy
Evergreen
✔
✘
✔
✘
Invasive
✔
✘
✔
✘
Self-Sowing
✔
✘
✔
✘
Attracts
Hummingbirds
Ants, Butterflies, pollinators
Allergy
Skin irritation
Antibacterial, Peripheral Edema
Uses
Aesthetic Uses
Showy Purposes
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
Blood disorders
Asthma, Diarrhea, Obesity, Osteoarthritis
Part of Plant Used
Buds
Leaves, Twigs
Other Uses
Culinary use
Used for its medicinal properties
Used As Indoor Plant
✔
✘
✔
✘
Used As Outdoor Plant
✔
✘
✔
✘
Garden Design
Feature Plant, Groundcover, Mixed Border
Container, Feature Plant, Foundation, Groundcover, Hedges, Mixed Border, Tropical
Botanical Name
OSMUNDA claytoniana
Symphytum asperum
Common Name
Interrupted Fern
Comfrey,Black Root, Blackwort, Bruisewort
In Hindi
बाधित फर्न
Blackwort
In German
unterbrochen Fern
Blackwort
In French
Fern interrompu
Blackwort
In Spanish
helecho interrumpido
Blackwort
In Greek
διακοπεί Fern
Blackwort
In Portuguese
Fern interrompido
Blackwort
In Polish
przerwana Fern
Blackwort
In Latin
Fern intermissis
Blackwort
Kingdom
Plantae
Plantae
Phylum
Pteridophyta
Magnoliophyta
Class
Polypodiopsida
Magnoliopsida
Order
Osmundales
Lamiales
Family
Osmundaceae
Boraginaceae
Genus
Osmunda
Symphytum
Clade
-
Angiosperms, Eudicots, Rosids
Tribe
-
-
Subfamily
-
Boraginoideae
Number of Species
135
1
27800
👆🏻