Life Span
Perennial
Perennial
Type
Herbaceous Perennial
Perennial
Origin
China, Japan, Korea
Eastern Europe
Types
-
Iris
Number of Varieties
1525
0
40000
👆🏻
Habitat
Dappled Shade, meadows, Shady Edge, Sunny Edge, Woodland Garden
Terrestrial
USDA Hardiness Zone
5-94-9
0
99
👆🏻
AHS Heat Zone
9-4
9-1
Sunset Zone
2a, 2b, 3a, 3b, 4, 5, 6, 7, 8, 9, 10, 14, 15, 16, 17, 18, 19, 20, 21, 22, 23, 24
1a, 1b, 2a, 2b, 3a, 3b, 4, 5, 6, 7, 8, 9, 10, 11, 12, 13, 14, 15, 16, 17, 18, 19, 20, 21, 22, 23, 24
Habit
Clump-Forming
Clump-Forming
Plant Size
Minimum Height
60.00 cm10.20 cm
0
3900
👆🏻
Minimum Width
120.00 cm15.20 cm
0
6350
👆🏻
Plant Color
Flower Color
Light Yellow, Ivory
Yellow, Lavender, Blue Violet
Flower Color Modifier
Bicolor
Bicolor
Fruit Color
-
-
Leaf Color in Spring
Green
Green, Sea Green
Leaf Color in Summer
Green
Green, Sea Green
Leaf Color in Fall
Green
Green, Sea Green
Leaf Color in Winter
-
Light Green
Shape
Leaf Shape
Ovate
Lanceolate
Thorns
✔
✘
✔
✘
Plant Season
Spring, Summer, Fall
Spring, Summer
Growing Conditions
Sunlight
Partial shade, Full Shade
Full Sun, Partial Sun
Growth Rate
Fast
Medium
Type of Soil
Clay, Loam, Sand
Loam, Sand
The pH of Soil
Acidic, Neutral, Alkaline
Neutral
Soil Drainage
Poorly Drained
Well drained
Bloom Time
Early Spring, Late Winter
Spring, Late Spring, Early Summer
Repeat Bloomer
✔
✘
✔
✘
Tolerances
Wet Site
Drought
Where to Plant?
Container, Ground, Pot
Ground
How to Plant?
Divison, Seedlings
By dividing rhizomes, tubers, Seedlings
Plant Maintenance
Medium
Medium
Watering Plants
Watering Requirements
Water once every two or three weeks
Average Water Needs, Do Not over Water
In Summer
Lots of watering
Lots of watering
In Spring
Moderate
Moderate
In Winter
Average Water
Average Water
Soil
Soil pH
Acidic, Neutral, Alkaline
Neutral
Soil Type
Clay, Loam, Sand
Loam, Sand
Soil Drainage Capacity
Poorly Drained
Well drained
Sun Exposure
Partial shade, Full Shade
Full Sun, Partial Sun
Pruning
Remove the old foliage
Remove damaged leaves, Remove dead branches, Remove dead leaves
Fertilizers
Use a fertilizer ratio of 16-4-8
All-Purpose Liquid Fertilizer
Pests and Diseases
-
Red blotch
Plant Tolerance
Drought
Drought
Flowers
✔
✘
✔
✘
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
Bold
Coarse
Foliage Sheen
Glossy
Matte
Evergreen
✔
✘
✔
✘
Invasive
✔
✘
✔
✘
Self-Sowing
✔
✘
✔
✘
Attracts
-
Hummingbirds
Allergy
-
Skin irritation
Uses
Aesthetic Uses
Bog Garden, Showy Purposes
Showy Purposes
Beauty Benefits
-
-
Edible Uses
✔
✘
✔
✘
Environmental Uses
Air purification
Air purification
Plant Benefits
Medicinal Uses
Antiasthamatic, Antispasmodic, Expectorant, Poultice
-
Part of Plant Used
Flowers, Stem
-
Other Uses
Can be boiled and seasoned, pickled, Used as umbrellas by Japanese children, Used as walking sticks, Used like rhubarb
Used as Ornamental plant
Used As Indoor Plant
✔
✘
✔
✘
Used As Outdoor Plant
✔
✘
✔
✘
Garden Design
Bog Garden, Container, Feature Plant, Water Gardens
Alpine, Edging, Mixed Border, Rock Garden, Wall
Botanical Name
PETASITES japonicus
IRIS pumila
Common Name
Giant Butterbur, Japanese Butterbur
Dwarf Iris
In Hindi
Giant Butterbur
Dwarf Iris
In German
Riesen Pestwurz
Zwergiris
In French
géant Butterbur
Dwarf Iris
In Spanish
gigante petasita
Enano Iris
In Greek
Giant Butterbur
νάνος Ίρις
In Portuguese
Carrapicho gigante
Dwarf Iris
In Polish
Giant Lepiężnik
Dwarf Iris
In Latin
Giant Butterbur
Iris Dwarf
Kingdom
Plantae
Plantae
Phylum
Magnoliophyta
Magnoliophyta
Class
Magnoliopsida
Liliopsida
Order
Asterales
Liliales
Family
Asteraceae
Iridaceae
Genus
Petasites
Iris
Clade
Angiosperms, Asterids, Eudicots
Angiosperms, Monocots
Tribe
Senecioneae
Irideae
Subfamily
Asteroideae
Iridoideae
Number of Species
1300
1
27800
👆🏻