Life Span
Perennial
Perennial
Type
Flowering Plants
Perennial
Origin
South-Central United States
North America, United States, Northeastern United States, Mid-Atlantic United States, Southeastern United States, Canada
Types
Penstemon digitalis, Penstemon barbatus, Penstemon heterophyllus
-
Number of Varieties
2002
0
40000
👆🏻
Habitat
Rocky areas
gardens, Hardwood forests
USDA Hardiness Zone
5-85-7
0
99
👆🏻
AHS Heat Zone
12-1
7-5
Sunset Zone
No Available
2a, 2b, 3a, 3b, 4, 5, 6, 7, 8, 9, 10
Habit
Clump-Forming
Clump-Forming
Plant Size
Minimum Height
30.00 cm15.20 cm
0
3900
👆🏻
Minimum Width
30.50 cm12.70 cm
0
6350
👆🏻
Plant Color
Flower Color
White, Purple
White
Flower Color Modifier
Bicolor
Bicolor
Fruit Color
-
Light Green
Leaf Color in Spring
Green
Green, Blue Green
Leaf Color in Summer
Green
Green, Gray Green
Leaf Color in Fall
Green
Green, Gray Green
Leaf Color in Winter
-
Light Green
Shape
Leaf Shape
Long linear and narrow
Butterfly shaped
Thorns
✔
✘
✔
✘
Plant Season
-
Spring, Summer, Fall
Growing Conditions
Sunlight
Full Sun, Partial Sun
Partial shade, Full Shade
Growth Rate
Medium
Slow
Type of Soil
Loam
Clay, Loam
The pH of Soil
Neutral, Alkaline
Neutral, Alkaline
Soil Drainage
Well drained
Average
Bloom Time
Late Spring
Late Spring, Early Summer
Repeat Bloomer
✔
✘
✔
✘
Tolerances
-
Drought
Where to Plant?
Ground
Ground, Pot
How to Plant?
From bulbs
Divison, Seedlings, Stem Planting
Plant Maintenance
Medium
Medium
Watering Plants
Watering Requirements
Requires watering in the growing season
Medium
In Summer
Lots of watering
Lots of watering
In Spring
Moderate
Moderate
In Winter
Average Water
Average Water
Soil
Soil pH
Neutral, Alkaline
Neutral, Alkaline
Soil Type
Loam
Clay, Loam
Soil Drainage Capacity
Well drained
Average
Sun Exposure
Full Sun, Partial Sun
Partial shade, Full Shade
Pruning
Remove damaged leaves
Remove deadheads, Requires very little pruning
Fertilizers
All-Purpose Liquid Fertilizer
No fertilizers needed
Pests and Diseases
Red blotch
Pests and diseases free, Red blotch
Plant Tolerance
Drought
Drought
Flowers
✔
✘
✔
✘
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
Coarse
Foliage Sheen
Matte
Matte
Evergreen
✔
✘
✔
✘
Invasive
✔
✘
✔
✘
Self-Sowing
✔
✘
✔
✘
Attracts
Hummingbirds, Butterflies
Bees, Butterflies
Allergy
-
-
Uses
Aesthetic Uses
Showy Purposes
Showy Purposes
Beauty Benefits
-
-
Edible Uses
✔
✘
✔
✘
Environmental Uses
Air purification
Air purification
Plant Benefits
Medicinal Uses
-
Cancer, Diuretic
Part of Plant Used
Flowers, Leaves
Flowers, Root
Other Uses
Showy Purposes, Used as Ornamental plant
-
Used As Indoor Plant
✔
✘
✔
✘
Used As Outdoor Plant
✔
✘
✔
✘
Garden Design
Bedding Plant, Rock Garden / Wall, Wildflower
Feature Plant, Groundcover
Botanical Name
PENSTEMON cobaea
JEFFERSONIA diphylla
Common Name
Beardtongue
-
In Hindi
Beardtongue
Twinleaf
In German
Bartfaden
Twinleaf
In French
beardtongue
Twinleaf
In Spanish
beardtongue
Twinleaf
In Greek
Beardtongue
Twinleaf
In Portuguese
Beardtongue
Twinleaf
In Polish
Beardtongue
Twinleaf
In Latin
ursus lingua
Twinleaf
Kingdom
Plantae
Plantae
Phylum
Tracheophyta
Tracheophyta
Class
Equisetopsida
Magnoliopsida
Order
Lamiales
Ranunculales
Family
Scrophulariaceae
Berberidaceae
Genus
Penstemon
Jeffersonia
Clade
Angiosperms, Asterids, Eudicots
Angiosperms, Eudicots
Tribe
-
-
Subfamily
-
-
Number of Species
2612
1
27800
👆🏻