Life Span
Perennial
Perennial
Type
Herbaceous Perennial
Tree
Origin
China, Japan, Korea
Central Asia, India, Nepal
Types
-
White oak, Bluff oak, Muller oak
Number of Varieties
15600
0
40000
👆🏻
Habitat
Dappled Shade, meadows, Shady Edge, Sunny Edge, Woodland Garden
Clay soil areas, Dry areas, Sandy areas
USDA Hardiness Zone
5-96-9
0
99
👆🏻
AHS Heat Zone
9-4
7-5
Sunset Zone
2a, 2b, 3a, 3b, 4, 5, 6, 7, 8, 9, 10, 14, 15, 16, 17, 18, 19, 20, 21, 22, 23, 24
H1, 7, 8, 9, 14, 15, 16, 17, 20, 21, 22, 23, 24
Habit
Clump-Forming
Oval or Rounded
Plant Size
Minimum Height
60.00 cm2,286.00 cm
0
3900
👆🏻
Minimum Width
120.00 cm1,219.20 cm
0
6350
👆🏻
Plant Color
Flower Color
Light Yellow, Ivory
Red, Yellow green
Flower Color Modifier
Bicolor
Bicolor
Fruit Color
-
Sandy Brown, Sienna
Leaf Color in Spring
Green
Green, Light Green, Gray
Leaf Color in Summer
Green
Green, Gray
Leaf Color in Fall
Green
Green, Dark Green, Gray
Leaf Color in Winter
-
Dark Green, Gray
Shape
Leaf Shape
Ovate
broad, flat
Thorns
✔
✘
✔
✘
Plant Season
Spring, Summer, Fall
Spring, Summer, Fall, Winter
Growing Conditions
Sunlight
Partial shade, Full Shade
Full Sun, Partial Sun
Growth Rate
Fast
Medium
Type of Soil
Clay, Loam, Sand
Loam
The pH of Soil
Acidic, Neutral, Alkaline
Acidic
Soil Drainage
Poorly Drained
Average
Bloom Time
Early Spring, Late Winter
Spring
Repeat Bloomer
✔
✘
✔
✘
Tolerances
Wet Site
Drought
Where to Plant?
Container, Ground, Pot
Ground
How to Plant?
Divison, Seedlings
Seedlings, Transplanting
Plant Maintenance
Medium
Medium
Watering Plants
Watering Requirements
Water once every two or three weeks
Average Water Needs
In Summer
Lots of watering
Lots of watering
In Spring
Moderate
Moderate
In Winter
Average Water
Average Water
Soil
Soil pH
Acidic, Neutral, Alkaline
Acidic
Soil Type
Clay, Loam, Sand
Loam
Soil Drainage Capacity
Poorly Drained
Average
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
-
-
Fruits
Showy Fruit
✔
✘
✔
✘
Edible Fruit
✔
✘
✔
✘
Fragrance
Fragrant Flower
✔
✘
✔
✘
Fragrant Fruit
✔
✘
✔
✘
Fragrant Leaf
✔
✘
✔
✘
Fragrant Bark/Stem
✔
✘
✔
✘
Showy Foliage
✔
✘
✔
✘
Showy Bark
✔
✘
✔
✘
Foliage Texture
Bold
Medium
Foliage Sheen
Glossy
Glossy
Evergreen
✔
✘
✔
✘
Invasive
✔
✘
✔
✘
Self-Sowing
✔
✘
✔
✘
Attracts
-
Birds
Allergy
-
Pollen
Uses
Aesthetic Uses
Bog Garden, Showy Purposes
Showy Purposes
Beauty Benefits
-
-
Edible Uses
✔
✘
✔
✘
Environmental Uses
Air purification
Air purification, Nesting sites for birds, Shadow Tree, Shelter for wildlife, Wildlife
Plant Benefits
Medicinal Uses
Antiasthamatic, Antispasmodic, Expectorant, Poultice
Chronic fatigue, Cramps, Diarrhea, Dysentry, gallstones, Haemorrhages, Menstrual Cramps
Part of Plant Used
Flowers, Stem
Leaves, Seeds, Wood
Other Uses
Can be boiled and seasoned, pickled, Used as umbrellas by Japanese children, Used as walking sticks, Used like rhubarb
Used as firewood, used for making charcoal
Used As Indoor Plant
✔
✘
✔
✘
Used As Outdoor Plant
✔
✘
✔
✘
Garden Design
Bog Garden, Container, Feature Plant, Water Gardens
Feature Plant, Shade Trees
Botanical Name
PETASITES japonicus
QUERCUS leucotrichophora
Common Name
Giant Butterbur, Japanese Butterbur
Banj Oak, Blackjack Oak, Himalayan Oak
In Hindi
Giant Butterbur
Blackjack Oak Tree
In German
Riesen Pestwurz
Blackjack Oak Tree
In French
géant Butterbur
Blackjack Oak Tree
In Spanish
gigante petasita
Blackjack Oak Tree
In Greek
Giant Butterbur
Blackjack Oak Tree
In Portuguese
Carrapicho gigante
Blackjack Carvalho
In Polish
Giant Lepiężnik
Blackjack Oak Tree
In Latin
Giant Butterbur
Blackjack quercum ligno
Kingdom
Plantae
Plantae
Phylum
Magnoliophyta
Magnoliophyta
Class
Magnoliopsida
Magnoliopsida
Order
Asterales
Fagales
Family
Asteraceae
Fagaceae
Genus
Petasites
Quercus
Clade
Angiosperms, Asterids, Eudicots
Angiosperms, Eudicots, Rosids
Tribe
Senecioneae
-
Subfamily
Asteroideae
-
Number of Species
160
1
27800
👆🏻