Life Span
Perennial
Perennial
Type
Flowering Plants
Broadleaf Evergreen
Origin
South-Central United States
-
Types
Penstemon digitalis, Penstemon barbatus, Penstemon heterophyllus
Rhododendron aberconwayi, Rhododendron bulu, Rhododendron kanehirae
Number of Varieties
200700
0
40000
👆🏻
Habitat
Rocky areas
moist forests
USDA Hardiness Zone
5-85-8
0
99
👆🏻
AHS Heat Zone
12-1
-
Sunset Zone
No Available
21,22
Habit
Clump-Forming
Spreading
Plant Size
Minimum Height
30.00 cm150.00 cm
0
3900
👆🏻
Minimum Width
30.50 cm150.00 cm
0
6350
👆🏻
Plant Color
Flower Color
White, Purple
Red
Flower Color Modifier
Bicolor
Bicolor
Fruit Color
-
Green, Tan
Leaf Color in Spring
Green
Green
Leaf Color in Summer
Green
Green
Leaf Color in Fall
Green
Green
Leaf Color in Winter
-
Green
Shape
Leaf Shape
Long linear and narrow
Ovate
Thorns
✔
✘
✔
✘
Plant Season
-
Spring, Summer, Fall, Winter
Growing Conditions
Sunlight
Full Sun, Partial Sun
Full Sun, Partial Sun
Growth Rate
Medium
Medium
Type of Soil
Loam
Loam, Sand
The pH of Soil
Neutral, Alkaline
Acidic
Soil Drainage
Well drained
Well drained
Bloom Time
Late Spring
Late Spring
Repeat Bloomer
✔
✘
✔
✘
Tolerances
-
-
Where to Plant?
Ground
Ground
How to Plant?
From bulbs
From Rhizomes, Seedlings, Stem Planting
Plant Maintenance
Medium
Medium
Watering Plants
Watering Requirements
Requires watering in the growing season
Do Not over Water, Keep ground moist
In Summer
Lots of watering
Consistently
In Spring
Moderate
Moderate
In Winter
Average Water
Ample Water
Soil
Soil pH
Neutral, Alkaline
Acidic
Soil Type
Loam
Loam, Sand
Soil Drainage Capacity
Well drained
Well drained
Sun Exposure
Full Sun, Partial Sun
Full Sun, Partial Sun
Pruning
Remove damaged leaves
Prune after flowering, Remove dead or diseased plant parts, Remove deadheads, Remove short twigs
Fertilizers
All-Purpose Liquid Fertilizer
Apply 12-10-18 NPK, General garden fertilizer
Pests and Diseases
Red blotch
Azalea leaf gall, Bud blast, Galls, Honey fungus, Leaf Hoppers, Leaf spot, Petal blight, Phytophthora, Powdery mildew, Rust, Silver leaf
Plant Tolerance
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
Coarse
Foliage Sheen
Matte
Matte
Evergreen
✔
✘
✔
✘
Invasive
✔
✘
✔
✘
Self-Sowing
✔
✘
✔
✘
Attracts
Hummingbirds, Butterflies
-
Allergy
-
Asthma
Uses
Aesthetic Uses
Showy Purposes
Showy Purposes
Beauty Benefits
-
Making cosmetics
Edible Uses
✔
✘
✔
✘
Environmental Uses
Air purification
Air purification
Plant Benefits
Medicinal Uses
-
Burns, Chronic fatigue, Cold, Diarrhea, Dysentry, Headache, Rheumatism
Part of Plant Used
Flowers, Leaves
Whole plant
Other Uses
Showy Purposes, Used as Ornamental plant
Cosmetics, Employed in herbal medicine, Oil is used for aromatherapy, Oil is used in perfume, soaps, creams, etc., Sometimes used for making wine
Used As Indoor Plant
✔
✘
✔
✘
Used As Outdoor Plant
✔
✘
✔
✘
Garden Design
Bedding Plant, Rock Garden / Wall, Wildflower
Feature Plant, Hedges, Mixed Border, Screening, Wind Break, Topiary, Bonsai, Espalier
Botanical Name
PENSTEMON cobaea
RHODODENDRON
Common Name
Beardtongue
Rhododendron
In Hindi
Beardtongue
rhododendron
In German
Bartfaden
Rhododendron
In French
beardtongue
rhododendron
In Spanish
beardtongue
rododendro
In Greek
Beardtongue
ροδοδάφνη
In Portuguese
Beardtongue
rododendro
In Polish
Beardtongue
rododendron
In Latin
ursus lingua
Rhododendron
Kingdom
Plantae
Plantae
Phylum
Tracheophyta
Magnoliophyta
Class
Equisetopsida
Magnoliopsida
Order
Lamiales
Ericales
Family
Scrophulariaceae
Ericaceae
Genus
Penstemon
Rhododendron
Clade
Angiosperms, Asterids, Eudicots
Angiosperms, Asterids, Eudicots
Tribe
-
Rhodoreae
Subfamily
-
Ericoideae
Number of Species
2611024
1
27800
👆🏻