Life Span
Perennial
Annual and Perennial
Type
Flowering Plants
Tender Perennial
Origin
South-Central United States
Eastern Africa
Types
Penstemon digitalis, Penstemon barbatus, Penstemon heterophyllus
-
Number of Varieties
20015
0
40000
👆🏻
Habitat
Rocky areas
Rocky Ridges, Shores of rivers or lakes, Tropical Climate, tropical environments
USDA Hardiness Zone
5-811-12
0
99
👆🏻
AHS Heat Zone
12-1
7-1
Sunset Zone
No Available
H1, 23, 24
Habit
Clump-Forming
Cushion/Mound-forming
Plant Size
Minimum Height
30.00 cm25.40 cm
0
3900
👆🏻
Minimum Width
30.50 cm25.40 cm
0
6350
👆🏻
Plant Color
Flower Color
White, Purple
Purple, Violet
Flower Color Modifier
Bicolor
Bicolor
Fruit Color
-
-
Leaf Color in Spring
Green
Dark Green
Leaf Color in Summer
Green
Dark Green
Leaf Color in Fall
Green
Dark Green
Leaf Color in Winter
-
Light Green
Shape
Leaf Shape
Long linear and narrow
Ovate
Thorns
✔
✘
✔
✘
Plant Season
-
Spring, Summer, Fall
Growing Conditions
Sunlight
Full Sun, Partial Sun
Full Sun, Partial Sun
Growth Rate
Medium
Slow
Type of Soil
Loam
Loam
The pH of Soil
Neutral, Alkaline
Neutral
Soil Drainage
Well drained
Average
Bloom Time
Late Spring
Indeterminate
Repeat Bloomer
✔
✘
✔
✘
Tolerances
-
Drought
Where to Plant?
Ground
Container, Ground, Pot
How to Plant?
From bulbs
Seedlings, stem tip cuttings
Plant Maintenance
Medium
Medium
Watering Plants
Watering Requirements
Requires watering in the growing season
Keep ground moist, Keep the Soil well drained, Medium, Requires regular watering
In Summer
Lots of watering
Lots of watering
In Spring
Moderate
Moderate
In Winter
Average Water
Average Water
Soil
Soil pH
Neutral, Alkaline
Neutral
Soil Type
Loam
Loam
Soil Drainage Capacity
Well drained
Average
Sun Exposure
Full Sun, Partial Sun
Full Sun, Partial Sun
Pruning
Remove damaged leaves
Pinch Tips, Prune prior to new growth, Prune to stimulate growth
Fertilizers
All-Purpose Liquid Fertilizer
All-Purpose Liquid Fertilizer
Pests and Diseases
Red blotch
Grey mold, Leaf spot, Mites, Root rot
Plant Tolerance
Drought
Drought
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
Fine
Foliage Sheen
Matte
Glossy
Evergreen
✔
✘
✔
✘
Invasive
✔
✘
✔
✘
Self-Sowing
✔
✘
✔
✘
Attracts
Hummingbirds, Butterflies
Butterflies, Flying insects, Hummingbirds
Allergy
-
Pollen
Uses
Aesthetic Uses
Showy Purposes
Bouquets, Cut Flowers, Decorating walls, Hanging Basket, Showy Purposes, Used for decorating walls, fences, gates, hedges, etc.
Beauty Benefits
-
-
Edible Uses
✔
✘
✔
✘
Environmental Uses
Air purification
Air purification
Plant Benefits
Medicinal Uses
-
-
Part of Plant Used
Flowers, Leaves
Flowers, Leaves
Other Uses
Showy Purposes, Used as Ornamental plant
Used as Ornamental plant, Used for bedding in gardens
Used As Indoor Plant
✔
✘
✔
✘
Used As Outdoor Plant
✔
✘
✔
✘
Garden Design
Bedding Plant, Rock Garden / Wall, Wildflower
Container, Edging, Houseplant, Tropical
Botanical Name
PENSTEMON cobaea
EXACUM affine
Common Name
Beardtongue
German Violet, Persian Violet
In Hindi
Beardtongue
persian violet
In German
Bartfaden
persian violet
In French
beardtongue
persian violet
In Spanish
beardtongue
Violeta persa
In Greek
Beardtongue
Περσικό Violet
In Portuguese
Beardtongue
Violeta persa
In Polish
Beardtongue
Persian Violet
In Latin
ursus lingua
hyacinthum Persarum
Kingdom
Plantae
Plantae
Phylum
Tracheophyta
Tracheophyta
Class
Equisetopsida
Magnoliopsida
Order
Lamiales
Gentianales
Family
Scrophulariaceae
Gentianaceae
Genus
Penstemon
Exacum
Clade
Angiosperms, Asterids, Eudicots
Angiosperms, Asterids, Eudicots
Tribe
-
Exaceae
Subfamily
-
-
Number of Species
26125
1
27800
👆🏻