Life Span
Perennial
Annual
Type
Flowering Plants
Bulb or Corm or Tuber
Origin
South-Central United States
Eastern Europe, Southern Europe, Mediterranean, Turkey, Western Asia
Types
Penstemon digitalis, Penstemon barbatus, Penstemon heterophyllus
Mountain silverbell , Rosea
Number of Varieties
2003
0
40000
👆🏻
Habitat
Rocky areas
Floodplains, low mountains, Lower slopes, secondary forest
USDA Hardiness Zone
5-85-9
0
99
👆🏻
AHS Heat Zone
12-1
9-5
Sunset Zone
No Available
21,22
Habit
Clump-Forming
Clump-Forming
Plant Size
Minimum Height
30.00 cm25.40 cm
0
3900
👆🏻
Minimum Width
30.50 cm30.50 cm
0
6350
👆🏻
Plant Color
Flower Color
White, Purple
White
Flower Color Modifier
Bicolor
Bicolor
Fruit Color
-
-
Leaf Color in Spring
Green
Green
Leaf Color in Summer
Green
Light Green
Leaf Color in Fall
Green
Several shades of Green
Leaf Color in Winter
-
Light Green
Shape
Leaf Shape
Long linear and narrow
Acuminate
Thorns
✔
✘
✔
✘
Plant Season
-
Spring
Growing Conditions
Sunlight
Full Sun, Partial Sun
Full Sun, Partial Sun, Partial shade
Growth Rate
Medium
Fast
Type of Soil
Loam
-
The pH of Soil
Neutral, Alkaline
-
Soil Drainage
Well drained
Well drained
Bloom Time
Late Spring
Spring, Late Spring
Repeat Bloomer
✔
✘
✔
✘
Tolerances
-
Drought
Where to Plant?
Ground
Ground
How to Plant?
From bulbs
Layering, Seedlings, Stem Cutting
Plant Maintenance
Medium
Medium
Watering Plants
Watering Requirements
Requires watering in the growing season
occasional watering once established
In Summer
Lots of watering
Lots of watering
In Spring
Moderate
Moderate
In Winter
Average Water
Average Water
Soil
Soil pH
Neutral, Alkaline
-
Soil Type
Loam
-
Soil Drainage Capacity
Well drained
Well drained
Sun Exposure
Full Sun, Partial Sun
Full Sun, Partial Sun, Partial shade
Pruning
Remove damaged leaves
Prune grass to maintain level, Remove damaged leaves, Remove dead branches, Remove dead leaves
Fertilizers
All-Purpose Liquid Fertilizer
All-Purpose Liquid Fertilizer
Pests and Diseases
Red blotch
Pests and diseases free
Plant Tolerance
Drought
Drought and Salt
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
-
Sometimes
Self-Sowing
✔
✘
✔
✘
Attracts
Hummingbirds, Butterflies
Bees, Flying insects
Allergy
-
-
Uses
Aesthetic Uses
Showy Purposes
along a porch, deck or patio, Beautification, Cottage Garden, Showy Purposes, Wild gardens
Beauty Benefits
-
-
Edible Uses
✔
✘
✔
✘
Environmental Uses
Air purification
Air purification
Plant Benefits
Medicinal Uses
-
-
Part of Plant Used
Flowers, Leaves
-
Other Uses
Showy Purposes, Used as Ornamental plant
Decoration Purposes
Used As Indoor Plant
✔
✘
✔
✘
Used As Outdoor Plant
✔
✘
✔
✘
Garden Design
Bedding Plant, Rock Garden / Wall, Wildflower
Container, Cutflower, Mixed Border, Rock Garden / Wall
Botanical Name
PENSTEMON cobaea
ORNITHOGALUM nutans
Common Name
Beardtongue
Drooping Star-of-Bethlehem, Nodding Star-of-Bethlehem, Silver Bells
In Hindi
Beardtongue
Silver bells
In German
Bartfaden
Silver bells
In French
beardtongue
Silver bells
In Spanish
beardtongue
Silver bells
In Greek
Beardtongue
Silver bells
In Portuguese
Beardtongue
Silver bells
In Polish
Beardtongue
Silver bells
In Latin
ursus lingua
Silver bells
Kingdom
Plantae
Plantae
Phylum
Tracheophyta
Angiosperms
Class
Equisetopsida
Magnoliopsida
Order
Lamiales
Ebenales
Family
Scrophulariaceae
Asparagaceae
Genus
Penstemon
Halesia
Clade
Angiosperms, Asterids, Eudicots
Eudicots
Tribe
-
-
Subfamily
-
-
Number of Species
2614
1
27800
👆🏻