Life Span
Annual and Perennial
Perennial
Type
Tender Perennial
Flowering Plants
Origin
Eastern Africa
South-Central United States
Types
-
Penstemon digitalis, Penstemon barbatus, Penstemon heterophyllus
Number of Varieties
15200
0
40000
👆🏻
Habitat
Rocky Ridges, Shores of rivers or lakes, Tropical Climate, tropical environments
Rocky areas
USDA Hardiness Zone
11-125-8
0
99
👆🏻
AHS Heat Zone
7-1
12-1
Sunset Zone
H1, 23, 24
No Available
Habit
Cushion/Mound-forming
Clump-Forming
Plant Size
Minimum Height
25.40 cm30.00 cm
0
3900
👆🏻
Minimum Width
25.40 cm30.50 cm
0
6350
👆🏻
Plant Color
Flower Color
Purple, Violet
White, Purple
Flower Color Modifier
Bicolor
Bicolor
Fruit Color
-
-
Leaf Color in Spring
Dark Green
Green
Leaf Color in Summer
Dark Green
Green
Leaf Color in Fall
Dark Green
Green
Leaf Color in Winter
Light Green
-
Shape
Leaf Shape
Ovate
Long linear and narrow
Thorns
✔
✘
✔
✘
Plant Season
Spring, Summer, Fall
-
Growing Conditions
Sunlight
Full Sun, Partial Sun
Full Sun, Partial Sun
Growth Rate
Slow
Medium
Type of Soil
Loam
Loam
The pH of Soil
Neutral
Neutral, Alkaline
Soil Drainage
Average
Well drained
Bloom Time
Indeterminate
Late Spring
Repeat Bloomer
✔
✘
✔
✘
Tolerances
Drought
-
Where to Plant?
Container, Ground, Pot
Ground
How to Plant?
Seedlings, stem tip cuttings
From bulbs
Plant Maintenance
Medium
Medium
Watering Plants
Watering Requirements
Keep ground moist, Keep the Soil well drained, Medium, Requires regular watering
Requires watering in the growing season
In Summer
Lots of watering
Lots of watering
In Spring
Moderate
Moderate
In Winter
Average Water
Average Water
Soil
Soil pH
Neutral
Neutral, Alkaline
Soil Type
Loam
Loam
Soil Drainage Capacity
Average
Well drained
Sun Exposure
Full Sun, Partial Sun
Full Sun, Partial Sun
Pruning
Pinch Tips, Prune prior to new growth, Prune to stimulate growth
Remove damaged leaves
Fertilizers
All-Purpose Liquid Fertilizer
All-Purpose Liquid Fertilizer
Pests and Diseases
Grey mold, Leaf spot, Mites, Root rot
Red blotch
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
Fine
Medium
Foliage Sheen
Glossy
Matte
Evergreen
✔
✘
✔
✘
Invasive
✔
✘
✔
✘
Self-Sowing
✔
✘
✔
✘
Attracts
Butterflies, Flying insects, Hummingbirds
Hummingbirds, Butterflies
Allergy
Pollen
-
Uses
Aesthetic Uses
Bouquets, Cut Flowers, Decorating walls, Hanging Basket, Showy Purposes, Used for decorating walls, fences, gates, hedges, etc.
Showy Purposes
Beauty Benefits
-
-
Edible Uses
✔
✘
✔
✘
Environmental Uses
Air purification
Air purification
Plant Benefits
Medicinal Uses
-
-
Part of Plant Used
Flowers, Leaves
Flowers, Leaves
Other Uses
Used as Ornamental plant, Used for bedding in gardens
Showy Purposes, Used as Ornamental plant
Used As Indoor Plant
✔
✘
✔
✘
Used As Outdoor Plant
✔
✘
✔
✘
Garden Design
Container, Edging, Houseplant, Tropical
Bedding Plant, Rock Garden / Wall, Wildflower
Botanical Name
EXACUM affine
PENSTEMON cobaea
Common Name
German Violet, Persian Violet
Beardtongue
In Hindi
persian violet
Beardtongue
In German
persian violet
Bartfaden
In French
persian violet
beardtongue
In Spanish
Violeta persa
beardtongue
In Greek
Περσικό Violet
Beardtongue
In Portuguese
Violeta persa
Beardtongue
In Polish
Persian Violet
Beardtongue
In Latin
hyacinthum Persarum
ursus lingua
Kingdom
Plantae
Plantae
Phylum
Tracheophyta
Tracheophyta
Class
Magnoliopsida
Equisetopsida
Order
Gentianales
Lamiales
Family
Gentianaceae
Scrophulariaceae
Genus
Exacum
Penstemon
Clade
Angiosperms, Asterids, Eudicots
Angiosperms, Asterids, Eudicots
Tribe
Exaceae
-
Subfamily
-
-
Number of Species
25261
1
27800
👆🏻