Life Span
Perennial
Perennial
Type
Broadleaf Evergreen
Herbaceous Perennial
Origin
-
China, Japan, Korea
Types
Rhododendron aberconwayi, Rhododendron bulu, Rhododendron kanehirae
-
Number of Varieties
70015
0
40000
👆🏻
Habitat
moist forests
Dappled Shade, meadows, Shady Edge, Sunny Edge, Woodland Garden
USDA Hardiness Zone
5-85-9
0
99
👆🏻
AHS Heat Zone
-
9-4
Sunset Zone
21,22
2a, 2b, 3a, 3b, 4, 5, 6, 7, 8, 9, 10, 14, 15, 16, 17, 18, 19, 20, 21, 22, 23, 24
Habit
Spreading
Clump-Forming
Plant Size
Minimum Height
150.00 cm60.00 cm
0
3900
👆🏻
Minimum Width
150.00 cm120.00 cm
0
6350
👆🏻
Plant Color
Flower Color
Red
Light Yellow, Ivory
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
Ovate
Thorns
✔
✘
✔
✘
Plant Season
Spring, Summer, Fall, Winter
Spring, Summer, Fall
Growing Conditions
Sunlight
Full Sun, Partial Sun
Partial shade, Full Shade
Growth Rate
Medium
Fast
Type of Soil
Loam, Sand
Clay, Loam, Sand
The pH of Soil
Acidic
Acidic, Neutral, Alkaline
Soil Drainage
Well drained
Poorly Drained
Bloom Time
Late Spring
Early Spring, Late Winter
Repeat Bloomer
✔
✘
✔
✘
Tolerances
-
Wet Site
Where to Plant?
Ground
Container, Ground, Pot
How to Plant?
From Rhizomes, Seedlings, Stem Planting
Divison, Seedlings
Plant Maintenance
Medium
Medium
Watering Plants
Watering Requirements
Do Not over Water, Keep ground moist
Water once every two or three weeks
In Summer
Consistently
Lots of watering
In Spring
Moderate
Moderate
In Winter
Ample Water
Average Water
Soil
Soil pH
Acidic
Acidic, Neutral, Alkaline
Soil Type
Loam, Sand
Clay, Loam, Sand
Soil Drainage Capacity
Well drained
Poorly Drained
Sun Exposure
Full Sun, Partial Sun
Partial shade, Full Shade
Pruning
Prune after flowering, Remove dead or diseased plant parts, Remove deadheads, Remove short twigs
Remove the old foliage
Fertilizers
Apply 12-10-18 NPK, General garden fertilizer
Use a fertilizer ratio of 16-4-8
Pests and Diseases
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
-
Fruits
Showy Fruit
✔
✘
✔
✘
Edible Fruit
✔
✘
✔
✘
Fragrance
Fragrant Flower
✔
✘
✔
✘
Fragrant Fruit
✔
✘
✔
✘
Fragrant Leaf
✔
✘
✔
✘
Fragrant Bark/Stem
✔
✘
✔
✘
Showy Foliage
✔
✘
✔
✘
Showy Bark
✔
✘
✔
✘
Foliage Texture
Coarse
Bold
Foliage Sheen
Matte
Glossy
Evergreen
✔
✘
✔
✘
Invasive
✔
✘
✔
✘
Self-Sowing
✔
✘
✔
✘
Attracts
-
-
Allergy
Asthma
-
Uses
Aesthetic Uses
Showy Purposes
Bog Garden, 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
Antiasthamatic, Antispasmodic, Expectorant, Poultice
Part of Plant Used
Whole plant
Flowers, Stem
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
Can be boiled and seasoned, pickled, Used as umbrellas by Japanese children, Used as walking sticks, Used like rhubarb
Used As Indoor Plant
✔
✘
✔
✘
Used As Outdoor Plant
✔
✘
✔
✘
Garden Design
Feature Plant, Hedges, Mixed Border, Screening, Wind Break, Topiary, Bonsai, Espalier
Bog Garden, Container, Feature Plant, Water Gardens
Botanical Name
RHODODENDRON
PETASITES japonicus
Common Name
Rhododendron
Giant Butterbur, Japanese Butterbur
In Hindi
rhododendron
Giant Butterbur
In German
Rhododendron
Riesen Pestwurz
In French
rhododendron
géant Butterbur
In Spanish
rododendro
gigante petasita
In Greek
ροδοδάφνη
Giant Butterbur
In Portuguese
rododendro
Carrapicho gigante
In Polish
rododendron
Giant Lepiężnik
In Latin
Rhododendron
Giant Butterbur
Kingdom
Plantae
Plantae
Phylum
Magnoliophyta
Magnoliophyta
Class
Magnoliopsida
Magnoliopsida
Order
Ericales
Asterales
Family
Ericaceae
Asteraceae
Genus
Rhododendron
Petasites
Clade
Angiosperms, Asterids, Eudicots
Angiosperms, Asterids, Eudicots
Tribe
Rhodoreae
Senecioneae
Subfamily
Ericoideae
Asteroideae
Number of Species
10241
1
27800
👆🏻