Life Span
Perennial
Perennial
Type
Broadleaf Evergreen
Cactus or Succulent, Tree
Origin
Europe, Russia
Southwestern United States, Mexico
Types
Symphytum officinale (common comfrey), Symphytum asperum (rough comfrey)
-
Number of Varieties
240
0
40000
👆🏻
Habitat
Cold Regions, stream banks
Desert, Dry areas, Rocky areas, Sandy areas
USDA Hardiness Zone
6-116-10
0
99
👆🏻
AHS Heat Zone
-
12-7
Sunset Zone
21,22
9, 10, 11, 12, 13, 14, 15, 16, 18, 19, 20, 21, 22, 23
Habit
Upright/Erect
Upright/Erect
Plant Size
Minimum Height
20.00 cm610.00 cm
0
3900
👆🏻
Minimum Width
90.00 cm300.00 cm
0
6350
👆🏻
Plant Color
Flower Color
White, Light Pink
White, Ivory
Flower Color Modifier
Bicolor
-
Fruit Color
Orange Red
Light Green
Leaf Color in Spring
Red, Green, Copper
Gray Green, Dark Green
Leaf Color in Summer
Green, Blue Green
Gray Green, Dark Green
Leaf Color in Fall
Green, Blue Green
Gray Green, Dark Green
Leaf Color in Winter
Red, Dark Green, Burgundy, Bronze
Olive, Gray Green, Dark Green
Shape
Leaf Shape
Oval
Linear
Thorns
✔
✘
✔
✘
Plant Season
Spring, Summer, Fall, Winter
Spring, Summer, Fall, Winter
Growing Conditions
Sunlight
Full Sun, Partial Sun, Partial shade
Full Sun
Growth Rate
Medium
Very Slow
Type of Soil
Loam, Sand
Loam, Sand
The pH of Soil
Acidic, Neutral
Acidic, Neutral, Alkaline
Soil Drainage
Well drained
Well drained
Bloom Time
Late Spring, Early Summer, Summer
Early Spring, Spring, Late Winter
Repeat Bloomer
✔
✘
✔
✘
Tolerances
-
Drought
Where to Plant?
Container, Ground
Ground
How to Plant?
Root Division, Transplanting
Leaf Cutting, Stem Cutting
Plant Maintenance
Low
Medium
Watering Plants
Watering Requirements
Allow to dry out slightly between watering, Water daily during growing season
Allow soil to be completely dry in between waterings, Do not water frequently
In Summer
Lots of watering
Lots of watering
In Spring
Moderate
Moderate
In Winter
Average Water
Average Water
Soil
Soil pH
Acidic, Neutral
Acidic, Neutral, Alkaline
Soil Type
Loam, Sand
Loam, Sand
Soil Drainage Capacity
Well drained
Well drained
Sun Exposure
Full Sun, Partial Sun, Partial shade
Full 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, No fertilizers needed
Pests and Diseases
Aphids, Stem spot
Brown Spots, Red blotch
Plant Tolerance
Shallow soil, Sun
Drought, Dry Conditions, Dry soil, Heat Tolerance, Rocky 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
Medium
Bold
Foliage Sheen
Glossy
Matte
Evergreen
✔
✘
✔
✘
Invasive
✔
✘
✔
✘
Self-Sowing
✔
✘
✔
✘
Attracts
Ants, Butterflies, pollinators
-
Allergy
Antibacterial, Peripheral Edema
-
Uses
Aesthetic Uses
Cottage Garden, Showy Purposes
Decorating walls
Beauty Benefits
Acne, Beautiful Skin, Reduce Bruises, Remove blemishes
-
Edible Uses
✔
✘
✔
✘
Environmental Uses
Air purification, Fixes Nitrogen
Air purification
Plant Benefits
Medicinal Uses
Asthma, Diarrhea, Obesity, Osteoarthritis
-
Part of Plant Used
Leaves, Twigs
-
Other Uses
Used for its medicinal properties
-
Used As Indoor Plant
✔
✘
✔
✘
Used As Outdoor Plant
✔
✘
✔
✘
Garden Design
Container, Feature Plant, Foundation, Groundcover, Hedges, Mixed Border, Tropical
Feature Plant, Rock Garden, Wall
Botanical Name
Symphytum asperum
YUCCA brevifolia
Common Name
Comfrey,Black Root, Blackwort, Bruisewort
yucca palm
tree yucca
palm tree yucca
In Hindi
Blackwort
Joshua Tree
In German
Blackwort
Joshua Tree
In French
Blackwort
Joshua Tree
In Spanish
Blackwort
Árbol de Joshua
In Greek
Blackwort
Joshua Tree
In Portuguese
Blackwort
Joshua Tree
In Polish
Blackwort
Joshua Tree
In Latin
Blackwort
Joshua ligno
Kingdom
Plantae
Plantae
Phylum
Magnoliophyta
Tracheophyta
Class
Magnoliopsida
Magnoliopsida
Order
Lamiales
Asparagales
Family
Boraginaceae
Agavaceae
Genus
Symphytum
Yucca
Clade
Angiosperms, Eudicots, Rosids
Angiosperms, Monocots
Tribe
-
-
Subfamily
Boraginoideae
-
Number of Species
3550
1
27800
👆🏻