Life Span
Perennial
Perennial
Type
Broadleaf Evergreen
Herbs
Origin
Europe, Russia
Southwestern United States, Central America, South America, Brazil
Types
Symphytum officinale (common comfrey), Symphytum asperum (rough comfrey)
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Habitat
Cold Regions, stream banks
Mountain Slopes, Mountains, tropical grasslands
USDA Hardiness Zone
6-11
-9999
Sunset Zone
21,22
H1, H2, 8, 9, 14, 15, 16, 17, 18, 19, 20, 21, 22, 23, 24
Habit
Upright/Erect
Upright/Erect
Flower Color
White, Light Pink
White
Flower Color Modifier
Bicolor
Bicolor
Leaf Color in Spring
Red, Green, Copper
Green, Dark Green
Leaf Color in Summer
Green, Blue Green
Dark Green
Leaf Color in Fall
Green, Blue Green
Dark Green
Leaf Color in Winter
Red, Dark Green, Burgundy, Bronze
Light Green
Leaf Shape
Oval
Even Pinnate
Plant Season
Spring, Summer, Fall, Winter
Summer, Fall
Sunlight
Full Sun, Partial Sun, Partial shade
Full Sun, Partial Sun
Type of Soil
Loam, Sand
Loam, Sand
The pH of Soil
Acidic, Neutral
Acidic, Neutral
Soil Drainage
Well drained
Average
Bloom Time
Late Spring, Early Summer, Summer
Summer, Late Summer
Where to Plant?
Container, Ground
Ground
How to Plant?
Root Division, Transplanting
Cuttings, root cutting
Plant Maintenance
Low
Medium
Watering Requirements
Allow to dry out slightly between watering, Water daily during growing season
Needs very little water, Over-watering can cause leaf problems or root diseases
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, Sand
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
Cut away fading foliage, Remove damaged leaves, Remove dead branches, Remove dead leaves, Remove dead or diseased plant parts
Fertilizers
14-14-14 Fertilizer, All-Purpose Liquid Fertilizer, can go long without fertilizers
Does not require fertilizer once established
Pests and Diseases
Aphids, Stem spot
Bacterial fruit blotch, Damping off, Fusarium wilt, Red blotch, Root rot, Septoria leaf spot, Southern blight
Plant Tolerance
Shallow soil, Sun
Drought, Variety of soil types
Flower Petal Number
Single
Single
Foliage Texture
Medium
Medium
Foliage Sheen
Glossy
Matte
Attracts
Ants, Butterflies, pollinators
Bees, Butterflies, Flies
Allergy
Antibacterial, Peripheral Edema
Asthma, Skin irritation, Skin rash
Aesthetic Uses
Cottage Garden, Showy Purposes
Cottage Garden, Ornamental use
Beauty Benefits
Acne, Beautiful Skin, Reduce Bruises, Remove blemishes
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Environmental Uses
Air purification, Fixes Nitrogen
Air purification
Medicinal Uses
Asthma, Diarrhea, Obesity, Osteoarthritis
Hypoglycaemic
Part of Plant Used
Leaves, Twigs
Leaves
Other Uses
Used for its medicinal properties
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Used As Indoor Plant
No
Yes
Used As Outdoor Plant
Yes
Yes
Garden Design
Container, Feature Plant, Foundation, Groundcover, Hedges, Mixed Border, Tropical
Bedding Plant, Container, Edible, Herb / Vegetable, Houseplant, Tropical
Botanical Name
Symphytum asperum
STEVIA rebaudiana
Common Name
Comfrey,Black Root, Blackwort, Bruisewort
Candyleaf, Stevia, Sweetleaf
In Hindi
Blackwort
Stevia
In German
Blackwort
Stevia
In French
Blackwort
Stevia
In Spanish
Blackwort
Stevia
In Greek
Blackwort
Stevia
In Portuguese
Blackwort
Stevia
In Polish
Blackwort
Stewia
In Latin
Blackwort
Stevia
Phylum
Magnoliophyta
Tracheophyta
Class
Magnoliopsida
Magnoliopsida
Family
Boraginaceae
Asteraceae
Clade
Angiosperms, Eudicots, Rosids
Angiosperms, Asterids, Eudicots
Subfamily
Boraginoideae
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Season and Care of Comfrey and Stevia
Season and care of Comfrey and Stevia is important to know. While considering everything about Comfrey and Stevia Care, growing season is an essential factor. Comfrey season is Spring, Summer, Fall and Winter and Stevia season is Spring, Summer, Fall and Winter. The type of soil for Comfrey is Loam, Sand and for Stevia is Loam, Sand while the PH of soil for Comfrey is Acidic, Neutral and for Stevia is Acidic, Neutral.
Comfrey and Stevia Physical Information
Comfrey and Stevia physical information is very important for comparison. Comfrey height is 20.00 cm and width 90.00 cm whereas Stevia height is 45.70 cm and width 40.60 cm. The color specification of Comfrey and Stevia are as follows:
Comfrey flower color: White and Light Pink
Comfrey leaf color: Red, Green and Copper
Stevia flower color: White
- Stevia leaf color: Green and Dark Green
Care of Comfrey and Stevia
Care of Comfrey and Stevia include pruning, fertilizers, watering etc. Comfrey pruning is done Cut or pinch the stems and Remove dead leaves and Stevia pruning is done Cut away fading foliage, Remove damaged leaves, Remove dead branches, Remove dead leaves and Remove dead or diseased plant parts. In summer Comfrey needs Lots of watering and in winter, it needs Average Water. Whereas, in summer Stevia needs Lots of watering and in winter, it needs Average Water.