Life Span
Perennial
  
Perennial
  
Type
Tree
  
Shrubs
  
Origin
United States, California
  
China, Japan, Korea
  
Types
Not Available
  
Not Available
  
Habitat
Woodland Garden Canopy
  
Wet lands
  
USDA Hardiness Zone
6-9
  
5-9
  
AHS Heat Zone
9-1
  
9-4
  
Sunset Zone
3a, 3b, 4, 5, 6, 7, 8, 9, 10, 11, 14, 15, 16, 17, 18, 19, 20, 21, 22, 23, 24
  
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
1,520.00 cm
  
28
Minimum Width
1,370.00 cm
  
12
Plant Color
  
  
Flower Color
Red, Yellow green
  
Light Yellow, Ivory
  
Flower Color Modifier
Bicolor
  
Bicolor
  
Fruit Color
Not Available
  
Not Available
  
Leaf Color in Spring
Green, Blue Green
  
Green, Purple, Burgundy
  
Leaf Color in Summer
Green, Blue Green
  
Green, Purple
  
Leaf Color in Fall
Yellow, Orange, Pink
  
Green, Purple
  
Leaf Color in Winter
Not Available
  
Not Available
  
Shape
  
  
Leaf Shape
Irregular
  
Round
  
Thorns
No
  
No
  
Plant Season
Spring, Summer, Fall, Winter
  
Spring, Summer, Fall
  
Growing Conditions
  
  
Sunlight
Full Sun, Partial Sun
  
Partial shade, Full Shade
  
Growth Rate
Slow
  
Fast
  
Type of Soil
Not Available
  
Clay, Loam, Sand
  
The pH of Soil
Not Available
  
Acidic, Neutral, Alkaline
  
Soil Drainage
Not Available
  
Poorly Drained
  
Bloom Time
Spring
  
Early Spring, Late Winter
  
Repeat Bloomer
No
  
No
  
Tolerances
Drought
  
Wet Site
  
Where to Plant?
Ground
  
Ground
  
How to Plant?
Seedlings
  
By dividing rhizomes, tubers
  
Plant Maintenance
Medium
  
Medium
  
Watering Plants
  
  
Watering Requirements
Average Water Needs
  
Requires consistently moist soil
  
In Summer
Lots of watering
  
Lots of watering
  
In Spring
Moderate
  
Moderate
  
In Winter
Average Water
  
Average Water
  
Soil
  
  
Soil pH
Not Available
  
Acidic, Neutral, Alkaline
  
Soil Type
Not Available
  
Clay, Loam, Sand
  
Soil Drainage Capacity
Not Available
  
Poorly Drained
  
Sun Exposure
Full Sun, Partial Sun
  
Partial shade, Full Shade
  
Pruning
Remove damaged leaves, Remove dead branches, Remove dead leaves, Remove dead or diseased plant parts
  
Remove damaged leaves, Remove dead branches, Remove dead leaves
  
Fertilizers
All-Purpose Liquid Fertilizer
  
All-Purpose Liquid Fertilizer
  
Pests and Diseases
Red blotch
  
Red blotch
  
Plant Tolerance
Drought
  
Drought
  
Flowers
Insignificant
  
Showy
  
Flower Petal Number
Not Available
  
Not Available
  
Fruits
  
  
Showy Fruit
Yes
  
No
  
Edible Fruit
No
  
No
  
Fragrance
  
  
Fragrant Flower
No
  
Yes
  
Fragrant Fruit
No
  
No
  
Fragrant Leaf
No
  
No
  
Fragrant Bark/Stem
No
  
No
  
Showy Foliage
Yes
  
Yes
  
Showy Bark
Yes
  
No
  
Foliage Texture
Medium
  
Bold
  
Foliage Sheen
Not Available
  
Glossy
  
Evergreen
No
  
No
  
Invasive
No
  
Sometimes
  
Self-Sowing
Yes
  
No
  
Attracts
Birds
  
Not Available
  
Allergy
Pollen
  
Not Available
  
Uses
  
  
Aesthetic Uses
Borders
  
Ground Cover
  
Beauty Benefits
Not Available
  
Not Available
  
Edible Uses
Yes
  
Yes
  
Environmental Uses
Air purification, Shadow Tree, soil erosion prevension on hill slopes, Wildlife, Windbreak
  
Air purification
  
Plant Benefits
  
  
Medicinal Uses
Astringent, Diarrhea, Dysentry, Haemorrhages, Poultice, Sore Eyes, Sore throat
  
Asthma, Chronic fatigue
  
Part of Plant Used
Leaves, Seeds, Wood
  
Leaves, Seeds, Stem
  
Other Uses
Adhesive, Basketary, Buttons, Repellent, Tannin, Used as fuel, Used for woodware
  
Used as Ornamental plant
  
Used As Indoor Plant
No
  
Sometimes
  
Used As Outdoor Plant
Yes
  
Yes
  
Garden Design
Feature Plant, Shade Trees, Street Trees
  
Bog Garden, Container, Water Gardens
  
Botanical Name
QUERCUS douglasii
  
PETASITES japonicus 'Purpureus'
  
Common Name
Blue Oak
  
Giant Butterbur, Japanese Butterbur, Purple Butterbur
  
In Hindi
Blue Oak Tree
  
Purple Butterbur
  
In German
Blaue Eiche
  
Lila Pestwurz
  
In French
Bleu Oak Tree
  
Violet Butterbur
  
In Spanish
Azul del árbol de roble
  
púrpura petasita
  
In Greek
Μπλε Oak Tree
  
Purple Butterbur
  
In Portuguese
Carvalho azul
  
roxo Carrapicho
  
In Polish
Niebieski Oak Tree
  
Purpurowy Lepiężnik
  
In Latin
Blue quercum ligno
  
Purple Butterbur
  
Kingdom
Plantae
  
Plantae
  
Phylum
Magnoliophyta
  
Magnoliophyta
  
Class
Magnoliopsida
  
Magnoliopsida
  
Order
Fagales
  
Asterales
  
Family
Fagaceae
  
Asteraceae
  
Genus
Quercus
  
Petasites
  
Clade
Angiosperms, Eudicots, Rosids
  
Angiosperms, Asterids, Eudicots
  
Tribe
Not Available
  
Senecioneae
  
Subfamily
Not Available
  
Not Available
  
Number of Species
Not Available
  
Not Available
  
Season and Care of Blue Oak and Purple Butterbur
Season and care of Blue Oak and Purple Butterbur is important to know. While considering everything about Blue Oak and Purple Butterbur Care, growing season is an essential factor. Blue Oak season is Spring, Summer, Fall and Winter and Purple Butterbur season is Spring, Summer, Fall and Winter. The type of soil for Blue Oak is Not Available and for Purple Butterbur is Clay, Loam, Sand while the PH of soil for Blue Oak is Not Available and for Purple Butterbur is Acidic, Neutral, Alkaline.
Blue Oak and Purple Butterbur Physical Information
Blue Oak and Purple Butterbur physical information is very important for comparison. Blue Oak height is 1,520.00 cm and width 1,370.00 cm whereas Purple Butterbur height is 60.00 cm and width 120.00 cm. The color specification of Blue Oak and Purple Butterbur are as follows:
Blue Oak flower color: Red and Yellow green
Blue Oak leaf color: Green and Blue Green
Purple Butterbur flower color: Light Yellow and Ivory
- Purple Butterbur leaf color: Green, Purple and Burgundy
Care of Blue Oak and Purple Butterbur
Care of Blue Oak and Purple Butterbur include pruning, fertilizers, watering etc. Blue Oak pruning is done Remove damaged leaves, Remove dead branches, Remove dead leaves and Remove dead or diseased plant parts and Purple Butterbur pruning is done Remove damaged leaves, Remove dead branches and Remove dead leaves. In summer Blue Oak needs Lots of watering and in winter, it needs Average Water. Whereas, in summer Purple Butterbur needs Lots of watering and in winter, it needs Average Water.