Life Span
Perennial
Perennial
Type
Broadleaf Evergreen
Flowering Plants
Origin
-
South-Central United States
Types
Rhododendron aberconwayi, Rhododendron bulu, Rhododendron kanehirae
Penstemon digitalis, Penstemon barbatus, Penstemon heterophyllus
Number of Varieties
700200
0
40000
👆🏻
Habitat
moist forests
Rocky areas
USDA Hardiness Zone
5-85-8
0
99
👆🏻
AHS Heat Zone
-
12-1
Sunset Zone
21,22
No Available
Habit
Spreading
Clump-Forming
Plant Size
Minimum Height
150.00 cm30.00 cm
0
3900
👆🏻
Minimum Width
150.00 cm30.50 cm
0
6350
👆🏻
Plant Color
Flower Color
Red
White, Purple
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
Ovate
Long linear and narrow
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, Sand
Loam
The pH of Soil
Acidic
Neutral, Alkaline
Soil Drainage
Well drained
Well drained
Bloom Time
Late Spring
Late Spring
Repeat Bloomer
✔
✘
✔
✘
Tolerances
-
-
Where to Plant?
Ground
Ground
How to Plant?
From Rhizomes, Seedlings, Stem Planting
From bulbs
Plant Maintenance
Medium
Medium
Watering Plants
Watering Requirements
Do Not over Water, Keep ground moist
Requires watering in the growing season
In Summer
Consistently
Lots of watering
In Spring
Moderate
Moderate
In Winter
Ample Water
Average Water
Soil
Soil pH
Acidic
Neutral, Alkaline
Soil Type
Loam, Sand
Loam
Soil Drainage Capacity
Well drained
Well drained
Sun Exposure
Full Sun, Partial Sun
Full Sun, Partial Sun
Pruning
Prune after flowering, Remove dead or diseased plant parts, Remove deadheads, Remove short twigs
Remove damaged leaves
Fertilizers
Apply 12-10-18 NPK, General garden fertilizer
All-Purpose Liquid Fertilizer
Pests and Diseases
Azalea leaf gall, Bud blast, Galls, Honey fungus, Leaf Hoppers, Leaf spot, Petal blight, Phytophthora, Powdery mildew, Rust, Silver leaf
Red blotch
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
Coarse
Medium
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
Whole plant
Flowers, Leaves
Other Uses
Cosmetics, Employed in herbal medicine, Oil is used for aromatherapy, Oil is used in perfume, soaps, creams, etc., Sometimes used for making wine
Showy Purposes, Used as Ornamental plant
Used As Indoor Plant
✔
✘
✔
✘
Used As Outdoor Plant
✔
✘
✔
✘
Garden Design
Feature Plant, Hedges, Mixed Border, Screening, Wind Break, Topiary, Bonsai, Espalier
Bedding Plant, Rock Garden / Wall, Wildflower
Botanical Name
RHODODENDRON
PENSTEMON cobaea
Common Name
Rhododendron
Beardtongue
In Hindi
rhododendron
Beardtongue
In German
Rhododendron
Bartfaden
In French
rhododendron
beardtongue
In Spanish
rododendro
beardtongue
In Greek
ροδοδάφνη
Beardtongue
In Portuguese
rododendro
Beardtongue
In Polish
rododendron
Beardtongue
In Latin
Rhododendron
ursus lingua
Kingdom
Plantae
Plantae
Phylum
Magnoliophyta
Tracheophyta
Class
Magnoliopsida
Equisetopsida
Order
Ericales
Lamiales
Family
Ericaceae
Scrophulariaceae
Genus
Rhododendron
Penstemon
Clade
Angiosperms, Asterids, Eudicots
Angiosperms, Asterids, Eudicots
Tribe
Rhodoreae
-
Subfamily
Ericoideae
-
Number of Species
1024261
1
27800
👆🏻