Life Span
Perennial
Perennial
Type
Broadleaf Evergreen
Flowering Plants
Origin
-
South-Central United States
Types
Rhododendron, Azalea indica, Azalea japonica
Penstemon digitalis, Penstemon barbatus, Penstemon heterophyllus
Number of Varieties
10200
0
40000
👆🏻
Habitat
Forests
Rocky areas
USDA Hardiness Zone
8-115-8
0
99
👆🏻
AHS Heat Zone
-
12-1
Sunset Zone
21,22
No Available
Habit
Oval or Rounded
Clump-Forming
Plant Size
Minimum Height
60.00 cm30.00 cm
0
3900
👆🏻
Minimum Width
90.00 cm30.50 cm
0
6350
👆🏻
Plant Color
Flower Color
Red
White, Purple
Flower Color Modifier
Bicolor
Bicolor
Fruit Color
-
-
Leaf Color in Spring
Green, Dark Green
Green
Leaf Color in Summer
Green, Dark Green
Green
Leaf Color in Fall
Green, Dark Green
Green
Leaf Color in Winter
Green, Dark Green
-
Shape
Leaf Shape
Linear
Long linear and narrow
Thorns
✔
✘
✔
✘
Plant Season
Spring, Summer, Fall, Winter
-
Growing Conditions
Sunlight
Full Sun, Partial Sun, Partial shade
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
Early Spring, Spring, Late Fall, Winter, Late Winter
Late Spring
Repeat Bloomer
✔
✘
✔
✘
Tolerances
-
-
Where to Plant?
Ground
Ground
How to Plant?
Seedlings, Stem Cutting
From bulbs
Plant Maintenance
Medium
Medium
Watering Plants
Watering Requirements
Average Water Needs, Do not water frequently
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
Acidic
Neutral, Alkaline
Soil Type
Loam, Sand
Loam
Soil Drainage Capacity
Well drained
Well drained
Sun Exposure
Full Sun, Partial Sun, Partial shade
Full Sun, Partial Sun
Pruning
Remove damaged leaves, Remove dead branches, Remove dead leaves
Remove damaged leaves
Fertilizers
All-Purpose Liquid Fertilizer, Apply N-P-K
All-Purpose Liquid Fertilizer
Pests and Diseases
Caterpillars, Citrus leaf miner, Petal blight, Red blotch, Rust, Twig blight, Whiteflies
Red blotch
Plant Tolerance
Drought, Shade areas
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
Medium
Foliage Sheen
Matte
Matte
Evergreen
✔
✘
✔
✘
Invasive
✔
✘
✔
✘
Self-Sowing
✔
✘
✔
✘
Attracts
Onion thrips, White Pine Weevil
Hummingbirds, Butterflies
Allergy
-
-
Uses
Aesthetic Uses
Bonsai, Cottage Garden
Showy Purposes
Beauty Benefits
-
-
Edible Uses
✔
✘
✔
✘
Environmental Uses
Air purification
Air purification
Plant Benefits
Medicinal Uses
Astringent
-
Part of Plant Used
Flowers, Leaves
Flowers, Leaves
Other Uses
Repellent, used for making charcoal, Used for woodware
Showy Purposes, Used as Ornamental plant
Used As Indoor Plant
✔
✘
✔
✘
Used As Outdoor Plant
✔
✘
✔
✘
Garden Design
Container, Feature Plant, Foundation, Mixed Border, Rock Garden, Wall, Topiary, Bonsai, Espalier
Bedding Plant, Rock Garden / Wall, Wildflower
Botanical Name
RHODODENDRON 'Anthopogon'
PENSTEMON cobaea
Common Name
Evergreen Azalea
Beardtongue
In Hindi
Azalea
Beardtongue
In German
Azalee
Bartfaden
In French
azalée
beardtongue
In Spanish
azalea
beardtongue
In Greek
αζάλεα
Beardtongue
In Portuguese
Azalea
Beardtongue
In Polish
azalia
Beardtongue
In Latin
Azalea
ursus lingua
Kingdom
Plantae
Plantae
Phylum
Tracheophyta
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
👆🏻