Life Span
Perennial
Perennial
Type
Flowering Plants
Ornamental Grasses and Bamboo
Origin
South-Central United States
Southern Europe, Western Europe, Mediterranean
Types
Penstemon digitalis, Penstemon barbatus, Penstemon heterophyllus
-
Number of Varieties
20010
0
40000
👆🏻
Habitat
Rocky areas
Desert, Dry areas, Dry Forest, Rocky areas
USDA Hardiness Zone
5-84-9
0
99
👆🏻
AHS Heat Zone
12-1
9 - 1
Sunset Zone
No Available
1a, 1b, 2a, 2b, 3a, 3b, 4, 5, 6, 7, 8, 9, 10, 11, 14, 15, 16, 17, 18, 19, 20, 21, 22, 23, 24
Habit
Clump-Forming
Cushion/Mound-forming
Plant Size
Minimum Height
30.00 cm45.00 cm
0
3900
👆🏻
Minimum Width
30.50 cm60.96 cm
0
6350
👆🏻
Plant Color
Flower Color
White, Purple
Blue Green
Flower Color Modifier
Bicolor
Bicolor
Fruit Color
-
-
Leaf Color in Spring
Green
Blue Green, Silver, Gray
Leaf Color in Summer
Green
Light Green
Leaf Color in Fall
Green
Blue Green, Silver, Gray
Leaf Color in Winter
-
Blue Green, Tan, Silver, Gray
Shape
Leaf Shape
Long linear and narrow
Grass like
Thorns
✔
✘
✔
✘
Plant Season
-
Spring, Summer, Fall, Winter
Growing Conditions
Sunlight
Full Sun, Partial Sun
Full Sun
Growth Rate
Medium
Medium
Type of Soil
Loam
Clay, Loam, Sand
The pH of Soil
Neutral, Alkaline
Neutral, Alkaline
Soil Drainage
Well drained
Well drained
Bloom Time
Late Spring
Late Spring, Early Summer
Repeat Bloomer
✔
✘
✔
✘
Tolerances
-
Salt
Where to Plant?
Ground
Container, Ground
How to Plant?
From bulbs
Rooted stem cutting, Seedlings, Stem Planting
Plant Maintenance
Medium
Medium
Watering Plants
Watering Requirements
Requires watering in the growing season
Average Water Needs, occasional watering once established, 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, Alkaline
Neutral, Alkaline
Soil Type
Loam
Clay, Loam, Sand
Soil Drainage Capacity
Well drained
Well drained
Sun Exposure
Full Sun, Partial Sun
Full Sun
Pruning
Remove damaged leaves
Cut or pinch the stems, Pinch Tips, Remove damaged leaves, Remove dead branches, Remove dead leaves
Fertilizers
All-Purpose Liquid Fertilizer
All-Purpose Liquid Fertilizer
Pests and Diseases
Red blotch
Red blotch
Plant Tolerance
Drought
Salt
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
Fine
Foliage Sheen
Matte
Matte
Evergreen
✔
✘
✔
✘
Invasive
✔
✘
✔
✘
Self-Sowing
✔
✘
✔
✘
Attracts
Hummingbirds, Butterflies
Butterflies, Hummingbirds
Allergy
-
Asthma, Itchiness, Rash, Rhinitis
Uses
Aesthetic Uses
Showy Purposes
Ground Cover
Beauty Benefits
-
-
Edible Uses
✔
✘
✔
✘
Environmental Uses
Air purification
Air purification
Plant Benefits
Medicinal Uses
-
-
Part of Plant Used
Flowers, Leaves
Stem
Other Uses
Showy Purposes, Used as Ornamental plant
Used as Ornamental plant
Used As Indoor Plant
✔
✘
✔
✘
Used As Outdoor Plant
✔
✘
✔
✘
Garden Design
Bedding Plant, Rock Garden / Wall, Wildflower
Container, Edging, Mixed Border, Rock Garden / Wall
Botanical Name
PENSTEMON cobaea
HELICTOTRICHON sempervirens
Common Name
Beardtongue
Blue Oat Grass
In Hindi
Beardtongue
ब्लू जई घास
In German
Bartfaden
Blau Ährengras
In French
beardtongue
Bleu Oat Grass
In Spanish
beardtongue
Azul hierba de avena
In Greek
Beardtongue
Μπλε βρώμης Grass
In Portuguese
Beardtongue
Azul Aveia
In Polish
Beardtongue
Niebieski Owies trawa
In Latin
ursus lingua
Blue Oat Grass
Kingdom
Plantae
Plantae
Phylum
Tracheophyta
Magnoliophyta
Class
Equisetopsida
Liliopsida
Order
Lamiales
Poales
Family
Scrophulariaceae
Poaceae
Genus
Penstemon
Helictotrichon
Clade
Angiosperms, Asterids, Eudicots
Angiosperms, Commelinids, Monocots
Tribe
-
Aveneae
Subfamily
-
Pooideae
Number of Species
26170
1
27800
👆🏻