Life Span
Perennial
Perennial
Type
Grass
Broadleaf Evergreen
Origin
North America, United States, Western United States, Southwestern United States, Mexico
Europe, Russia
Types
Grasses
Symphytum officinale (common comfrey), Symphytum asperum (rough comfrey)
Number of Varieties
12
0
40000
👆🏻
Habitat
Dry areas
Cold Regions, stream banks
USDA Hardiness Zone
3-96-11
0
99
👆🏻
AHS Heat Zone
9 - 5
-
Sunset Zone
1a, 1b, 2a, 2b, 3a, 3b, 7, 8, 9, 10, 11, 14, 18, 19, 20, 21
21,22
Habit
Clump-Forming
Upright/Erect
Plant Size
Minimum Height
45.70 cm20.00 cm
0
3900
👆🏻
Minimum Width
25.40 cm90.00 cm
0
6350
👆🏻
Plant Color
Flower Color
White hair and some brown spots on margins and at tips
White, Light Pink
Flower Color Modifier
Bicolor
Bicolor
Fruit Color
-
Orange Red
Leaf Color in Spring
Green, Gray Green
Red, Green, Copper
Leaf Color in Summer
Light Green
Green, Blue Green
Leaf Color in Fall
Purple, Gray Green
Green, Blue Green
Leaf Color in Winter
Tan
Red, Dark Green, Burgundy, Bronze
Shape
Leaf Shape
Grass like
Oval
Thorns
✔
✘
✔
✘
Plant Season
Summer, Fall, Winter
Spring, Summer, Fall, Winter
Growing Conditions
Sunlight
Full Sun
Full Sun, Partial Sun, Partial shade
Growth Rate
Fast
Medium
Type of Soil
Clay, Loam, Sand
Loam, Sand
The pH of Soil
Neutral, Alkaline
Acidic, Neutral
Soil Drainage
Well drained
Well drained
Bloom Time
Summer, Late Summer
Late Spring, Early Summer, Summer
Repeat Bloomer
✔
✘
✔
✘
Tolerances
Pollution, Drought
-
Where to Plant?
Ground
Container, Ground
How to Plant?
Divison, Seedlings
Root Division, Transplanting
Plant Maintenance
Medium
Low
Watering Plants
Watering Requirements
Medium
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
Well drained
Well drained
Sun Exposure
Full 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
Beetles, Grasshoppers
Aphids, Stem spot
Plant Tolerance
Drought
Shallow soil, Sun
Flowers
Showy
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
Butterflies
Ants, Butterflies, pollinators
Allergy
-
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, Erosion control
Air purification, Fixes Nitrogen
Plant Benefits
Medicinal Uses
Cuts
Asthma, Diarrhea, Obesity, Osteoarthritis
Part of Plant Used
Leaves
Leaves, Twigs
Other Uses
Used to feed livestock
Used for its medicinal properties
Used As Indoor Plant
✔
✘
✔
✘
Used As Outdoor Plant
✔
✘
✔
✘
Garden Design
Dried Flower/Everlasting, Lawns and Turf, Mixed Border, Rock Garden / Wall
Container, Feature Plant, Foundation, Groundcover, Hedges, Mixed Border, Tropical
Botanical Name
BOUTELOUA gracilis
Symphytum asperum
Common Name
Blue Grama Grass, Mosquito Grass
Comfrey,Black Root, Blackwort, Bruisewort
In Hindi
Bouteloua gracilis
Blackwort
In German
Bouteloua Gracilis
Blackwort
In French
Bouteloua aristidoides
Blackwort
In Spanish
Chondrosum gracile
Blackwort
In Greek
Bouteloua gracilis
Blackwort
In Portuguese
Bouteloua Gracilis
Blackwort
In Polish
Bouteloua Gracilis
Blackwort
In Latin
Bouteloua Gracilis
Blackwort
Kingdom
Plantae
Plantae
Phylum
Magnoliophyta
Magnoliophyta
Class
Liliopsida
Magnoliopsida
Order
Cyperales
Lamiales
Family
Poaceae
Boraginaceae
Genus
Bouteloua
Symphytum
Clade
Angiosperms, Commelinids, Monocots
Angiosperms, Eudicots, Rosids
Tribe
Cynodonteae
-
Subfamily
Chloridoideae
Boraginoideae
Number of Species
10035
1
27800
👆🏻