Life Span
Perennial
Perennial
Type
Broadleaf Evergreen
Grass
Origin
Europe, Russia
Europe, Asia
Types
Symphytum officinale (common comfrey), Symphytum asperum (rough comfrey)
Blue Oat grass
Number of Varieties
Not Available
Habitat
Cold Regions, stream banks
Cropland, gardens, Grassland, Roadsides
USDA Hardiness Zone
6-11
4-9
AHS Heat Zone
Not Available
Not Available
Sunset Zone
21,22
1a, 1b, 2a, 2b, 3a, 3b, 4, 5, 6, 7, 15, 16, 17, 23, 24
Habit
Upright/Erect
Clump-Forming
Flower Color
White, Light Pink
Brown
Flower Color Modifier
Bicolor
Bicolor
Fruit Color
Not Available, Orange Red
Brown
Leaf Color in Spring
Red, Green, Copper
Gray Green
Leaf Color in Summer
Green, Blue Green
Light Green
Leaf Color in Fall
Green, Blue Green
Dark Green
Leaf Color in Winter
Red, Dark Green, Burgundy, Bronze
Tan, Brown
Leaf Shape
Oval
Grass like
Plant Season
Spring, Summer, Fall, Winter
Not Available
Sunlight
Full Sun, Partial Sun, Partial shade
Full Sun, Partial Sun
Growth Rate
Medium
Medium
Type of Soil
Loam, Sand
Loam
The pH of Soil
Acidic, Neutral
Acidic, Neutral
Soil Drainage
Well drained
Average
Bloom Time
Late Spring, Early Summer, Summer
Early Summer
Tolerances
Not Available
Drought
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
Does not require lot of watering, Water occasionally
In Summer
Lots of watering
Lots of watering
In Spring
Moderate
Moderate
In Winter
Average Water
Average Water
Soil pH
Acidic, Neutral
Acidic, Neutral
Soil Type
Loam, Sand
Loam
Soil Drainage Capacity
Well drained
Average
Sun Exposure
Full Sun, Partial Sun, Partial shade
Full Sun, Partial Sun
Pruning
Cut or pinch the stems, Remove dead leaves
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
Pests and Diseases
Aphids, Stem spot
Red blotch
Plant Tolerance
Shallow soil, Sun
Drought
Flowers
Showy
Not Available
Flower Petal Number
Single
Single
Foliage Texture
Medium
Not Available
Foliage Sheen
Glossy
Matte
Attracts
Ants, Butterflies, pollinators
Not Available
Allergy
Antibacterial, Peripheral Edema
Asthma, Itchy eyes
Aesthetic Uses
Cottage Garden, Showy Purposes
Not Used For Aesthetic Purpose
Beauty Benefits
Acne, Beautiful Skin, Reduce Bruises, Remove blemishes
Not Available
Environmental Uses
Air purification, Fixes Nitrogen
Air purification
Medicinal Uses
Asthma, Diarrhea, Obesity, Osteoarthritis
Arthritis, Headache, Stomach pain
Part of Plant Used
Leaves, Twigs
Whole plant
Other Uses
Used for its medicinal properties
Used as a nutritious food item
Used As Indoor Plant
No
No
Used As Outdoor Plant
Yes
Yes
Garden Design
Container, Feature Plant, Foundation, Groundcover, Hedges, Mixed Border, Tropical
Bedding Plant, Feature Plant, Groundcover
Botanical Name
Symphytum asperum
ARRHENATHERUM
Common Name
Comfrey,Black Root, Blackwort, Bruisewort
Oatgrass
In Hindi
Blackwort
जई घास
In German
Blackwort
Ährengras
In French
Blackwort
Folle avoine
In Spanish
Blackwort
oat Grass
In Greek
Blackwort
βρώμη Grass
In Portuguese
Blackwort
aveia-
In Polish
Blackwort
Owies trawa
In Latin
Blackwort
oat Grass
Phylum
Magnoliophyta
Not Available
Class
Magnoliopsida
Liliopsida
Family
Boraginaceae
Poaceae
Genus
Symphytum
Danthonia
Clade
Angiosperms, Eudicots, Rosids
Angiosperms, Commelinids, Monocots
Tribe
Not Available
Aveneae
Subfamily
Boraginoideae
Danthonioideae
Number of Species
Not Available
Not Available
Season and Care of Comfrey and Oatgrass
Season and care of Comfrey and Oatgrass is important to know. While considering everything about Comfrey and Oatgrass Care, growing season is an essential factor. Comfrey season is Spring, Summer, Fall and Winter and Oatgrass season is Spring, Summer, Fall and Winter. The type of soil for Comfrey is Loam, Sand and for Oatgrass is Loam while the PH of soil for Comfrey is Acidic, Neutral and for Oatgrass is Acidic, Neutral.
Comfrey and Oatgrass Physical Information
Comfrey and Oatgrass physical information is very important for comparison. Comfrey height is 20.00 cm and width 90.00 cm whereas Oatgrass height is 20.50 cm and width 30.50 cm. The color specification of Comfrey and Oatgrass are as follows:
Comfrey flower color: White and Light Pink
Comfrey leaf color: Red, Green and Copper
Oatgrass flower color: Brown
- Oatgrass leaf color: Gray Green
Care of Comfrey and Oatgrass
Care of Comfrey and Oatgrass include pruning, fertilizers, watering etc. Comfrey pruning is done Cut or pinch the stems and Remove dead leaves and Oatgrass pruning is done 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 Oatgrass needs Lots of watering and in winter, it needs Average Water.