Life Span
Perennial
Perennial
Type
Perennial
Broadleaf Evergreen
Origin
-
Europe, Russia
Types
-
Symphytum officinale (common comfrey), Symphytum asperum (rough comfrey)
Number of Varieties
502
0
40000
👆🏻
Habitat
Cold Regions, Temperate Regions
Cold Regions, stream banks
USDA Hardiness Zone
4-86-11
0
99
👆🏻
AHS Heat Zone
8-1
-
Sunset Zone
1a, 1b, 2a, 2b, 3a, 3b, 4, 5, 6, 7, 8, 9, 10, 11, 14, 15, 16, 17
21,22
Habit
Cushion/Mound-forming
Upright/Erect
Plant Size
Minimum Height
20.30 cm20.00 cm
0
3900
👆🏻
Minimum Width
27.90 cm90.00 cm
0
6350
👆🏻
Plant Color
Flower Color
Blue, Lavender
White, Light Pink
Flower Color Modifier
-
Bicolor
Fruit Color
-
Orange Red
Leaf Color in Spring
Green, Purple
Red, Green, Copper
Leaf Color in Summer
Green, Purple
Green, Blue Green
Leaf Color in Fall
Green, Purple
Green, Blue Green
Leaf Color in Winter
Light Green
Red, Dark Green, Burgundy, Bronze
Shape
Leaf Shape
Linear
Oval
Thorns
✔
✘
✔
✘
Plant Season
Spring, Summer, Fall
Spring, Summer, Fall, Winter
Growing Conditions
Sunlight
Partial Sun, Partial shade
Full Sun, Partial Sun, Partial shade
Growth Rate
Medium
Medium
Type of Soil
Clay, Loam, Sand
Loam, Sand
The pH of Soil
Acidic, Neutral, Alkaline
Acidic, Neutral
Soil Drainage
Average
Well drained
Bloom Time
Early Spring, Spring, Late Spring, Early Summer
Late Spring, Early Summer, Summer
Repeat Bloomer
✔
✘
✔
✘
Tolerances
Drought
-
Where to Plant?
Container, Ground
Container, Ground
How to Plant?
Seedlings
Root Division, Transplanting
Plant Maintenance
Medium
Low
Watering Plants
Watering Requirements
Average Water Needs, Keep ground moist, Water more in summer
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, Neutral, Alkaline
Acidic, Neutral
Soil Type
Clay, Loam, Sand
Loam, Sand
Soil Drainage Capacity
Average
Well drained
Sun Exposure
Partial Sun, Partial shade
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, as it is a flowering plant, use high phosphorous content fertilizer
14-14-14 Fertilizer, All-Purpose Liquid Fertilizer, can go long without fertilizers
Pests and Diseases
Red blotch
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
Beautification, 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
Black Dyes
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
Feature Plant, Mixed Border, Rock Garden / Wall, Wildflower
Container, Feature Plant, Foundation, Groundcover, Hedges, Mixed Border, Tropical
Botanical Name
Polemonium caeruleum
Symphytum asperum
Common Name
Jacob's Ladder
Comfrey,Black Root, Blackwort, Bruisewort
In Hindi
Jacob's Ladder
Blackwort
In German
Jacob's Ladder
Blackwort
In French
Jacob's Ladder
Blackwort
In Spanish
Jacob's Ladder
Blackwort
In Greek
Jacob's Ladder
Blackwort
In Portuguese
Jacob's Ladder
Blackwort
In Polish
Jacob's Ladder
Blackwort
In Latin
Jacob's Ladder
Blackwort
Kingdom
Plantae
Plantae
Phylum
Tracheophyta
Magnoliophyta
Class
Magnoliopsida
Magnoliopsida
Order
Ericales
Lamiales
Family
Polemoniaceae
Boraginaceae
Genus
Polemonium
Symphytum
Clade
Angiosperms, Asterids, Eudicots
Angiosperms, Eudicots, Rosids
Tribe
-
-
Subfamily
-
Boraginoideae
Number of Species
4035
1
27800
👆🏻