Life Span
Perennial
Perennial
Type
Flowering Plants
Broadleaf Evergreen
Origin
Northeastern United States, Mid-Atlantic United States, North-Central United States, Central United States
Europe, Russia
Types
Penstemon
Symphytum officinale (common comfrey), Symphytum asperum (rough comfrey)
Number of Varieties
152
0
40000
👆🏻
Habitat
Fields, open Woodlands, Wood Margins
Cold Regions, stream banks
USDA Hardiness Zone
3-86-11
0
99
👆🏻
AHS Heat Zone
8-1
-
Sunset Zone
1a, 1b, 2a, 2b, 3a, 3b, 4, 5, 6, 7, 8, 9, 14, 15, 16, 17, 18, 19, 20, 21, 22, 23, 24
21,22
Habit
Clump-Forming
Upright/Erect
Plant Size
Minimum Height
60.00 cm20.00 cm
0
3900
👆🏻
Minimum Width
30.00 cm90.00 cm
0
6350
👆🏻
Plant Color
Flower Color
White, Light Pink
White, Light Pink
Flower Color Modifier
Bicolor
Bicolor
Fruit Color
Brown
Orange Red
Leaf Color in Spring
Dark Red
Red, Green, Copper
Leaf Color in Summer
Dark Red
Green, Blue Green
Leaf Color in Fall
Dark Red
Green, Blue Green
Leaf Color in Winter
-
Red, Dark Green, Burgundy, Bronze
Shape
Leaf Shape
Lance-shaped to oblong
Oval
Thorns
✔
✘
✔
✘
Plant Season
Spring, Summer
Spring, Summer, Fall, Winter
Growing Conditions
Sunlight
Full Sun, Partial Sun
Full Sun, Partial Sun, Partial shade
Growth Rate
Fast
Medium
Type of Soil
Loam, Sand
Loam, Sand
The pH of Soil
Acidic, Neutral, Alkaline
Acidic, Neutral
Soil Drainage
Well drained
Well drained
Bloom Time
Late Spring, Early Summer
Late Spring, Early Summer, Summer
Repeat Bloomer
✔
✘
✔
✘
Tolerances
Drought, Salt
-
Where to Plant?
Container, Ground, Pot
Container, Ground
How to Plant?
Root Division, Seedlings, Softwood cuttings
Root Division, Transplanting
Plant Maintenance
Medium
Low
Watering Plants
Watering Requirements
Average Water Needs
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
Loam, Sand
Loam, Sand
Soil Drainage Capacity
Well drained
Well drained
Sun Exposure
Full Sun, Partial 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
Complete balanced fertilizer
14-14-14 Fertilizer, All-Purpose Liquid Fertilizer, can go long without fertilizers
Pests and Diseases
Leaf spot, Root rot
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
Medium
Medium
Foliage Sheen
Matte
Glossy
Evergreen
✔
✘
✔
✘
Invasive
✔
✘
✔
✘
Self-Sowing
✔
✘
✔
✘
Attracts
Birds, Hummingbirds, Butterflies
Ants, Butterflies, pollinators
Allergy
Mild Allergen
Antibacterial, Peripheral Edema
Uses
Aesthetic Uses
Borders, Wild gardens
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
Tooth ache
Asthma, Diarrhea, Obesity, Osteoarthritis
Part of Plant Used
Root
Leaves, Twigs
Other Uses
Showy Purposes
Used for its medicinal properties
Used As Indoor Plant
✔
✘
✔
✘
Used As Outdoor Plant
✔
✘
✔
✘
Garden Design
Cutflower, Mixed Border, Wildflower
Container, Feature Plant, Foundation, Groundcover, Hedges, Mixed Border, Tropical
Botanical Name
PENSTEMON digitalis 'Husker Red'
Symphytum asperum
Common Name
Husker Red Penstemon, Talus Slope Penstemon
Comfrey,Black Root, Blackwort, Bruisewort
In Hindi
Talus Slope Penstemon
Blackwort
In German
Gehängeschutt Penstemon
Blackwort
In French
Talus Slope Penstemon
Blackwort
In Spanish
Astrágalo pendiente Penstemon
Blackwort
In Greek
Αστράγαλος Κλίση Penstemon
Blackwort
In Portuguese
Talus Penstemon Slope
Blackwort
In Polish
Talus Slope Penstemon
Blackwort
In Latin
Talus Clivo Persicaria
Blackwort
Kingdom
Plantae
Plantae
Phylum
Magnoliophyta
Magnoliophyta
Class
Magnoliopsida
Magnoliopsida
Order
Scrophulariales
Lamiales
Family
Scrophulariaceae
Boraginaceae
Genus
Penstemon
Symphytum
Clade
Angiosperms, Asterids, Eudicots
Angiosperms, Eudicots, Rosids
Tribe
-
-
Subfamily
-
Boraginoideae
Number of Species
28035
1
27800
👆🏻