Life Span
Perennial
Perennial
Type
Tree
Perennial
Origin
United States, California
North America, United States, Northeastern United States, Mid-Atlantic United States, Southeastern United States, Canada
Types
-
-
Number of Varieties
82
0
40000
👆🏻
Habitat
Woodland Garden Canopy
gardens, Hardwood forests
USDA Hardiness Zone
6-95-7
0
99
👆🏻
AHS Heat Zone
9-1
7-5
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
Habit
Spreading
Clump-Forming
Plant Size
Minimum Height
1,520.00 cm15.20 cm
0
3900
👆🏻
Minimum Width
1,370.00 cm12.70 cm
0
6350
👆🏻
Plant Color
Flower Color
Red, Yellow green
White
Flower Color Modifier
Bicolor
Bicolor
Fruit Color
-
Light Green
Leaf Color in Spring
Green, Blue Green
Green, Blue Green
Leaf Color in Summer
Green, Blue Green
Green, Gray Green
Leaf Color in Fall
Yellow, Orange, Pink
Green, Gray Green
Leaf Color in Winter
-
Light Green
Shape
Leaf Shape
Irregular
Butterfly shaped
Thorns
✔
✘
✔
✘
Plant Season
Spring, Summer, Fall, Winter
Spring, Summer, Fall
Growing Conditions
Sunlight
Full Sun, Partial Sun
Partial shade, Full Shade
Growth Rate
Slow
Slow
Type of Soil
-
Clay, Loam
The pH of Soil
-
Neutral, Alkaline
Soil Drainage
-
Average
Bloom Time
Spring
Late Spring, Early Summer
Repeat Bloomer
✔
✘
✔
✘
Tolerances
Drought
Drought
Where to Plant?
Ground
Ground, Pot
How to Plant?
Seedlings
Divison, Seedlings, Stem Planting
Plant Maintenance
Medium
Medium
Watering Plants
Watering Requirements
Average Water Needs
Medium
In Summer
Lots of watering
Lots of watering
In Spring
Moderate
Moderate
In Winter
Average Water
Average Water
Soil
Soil pH
-
Neutral, Alkaline
Soil Type
-
Clay, Loam
Soil Drainage Capacity
-
Average
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 deadheads, Requires very little pruning
Fertilizers
All-Purpose Liquid Fertilizer
No fertilizers needed
Pests and Diseases
Red blotch
Pests and diseases free, 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
Medium
Coarse
Foliage Sheen
-
Matte
Evergreen
✔
✘
✔
✘
Invasive
✔
✘
✔
✘
Self-Sowing
✔
✘
✔
✘
Attracts
Birds
Bees, Butterflies
Allergy
Pollen
-
Uses
Aesthetic Uses
Borders
Showy Purposes
Beauty Benefits
-
-
Edible Uses
✔
✘
✔
✘
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
Cancer, Diuretic
Part of Plant Used
Leaves, Seeds, Wood
Flowers, Root
Other Uses
Adhesive, Basketary, Buttons, Repellent, Tannin, Used as fuel, Used for woodware
-
Used As Indoor Plant
✔
✘
✔
✘
Used As Outdoor Plant
✔
✘
✔
✘
Garden Design
Feature Plant, Shade Trees, Street Trees
Feature Plant, Groundcover
Botanical Name
QUERCUS douglasii
JEFFERSONIA diphylla
Common Name
Blue Oak
-
In Hindi
Blue Oak Tree
Twinleaf
In German
Blaue Eiche
Twinleaf
In French
Bleu Oak Tree
Twinleaf
In Spanish
Azul del árbol de roble
Twinleaf
In Greek
Μπλε Oak Tree
Twinleaf
In Portuguese
Carvalho azul
Twinleaf
In Polish
Niebieski Oak Tree
Twinleaf
In Latin
Blue quercum ligno
Twinleaf
Kingdom
Plantae
Plantae
Phylum
Magnoliophyta
Tracheophyta
Class
Magnoliopsida
Magnoliopsida
Order
Fagales
Ranunculales
Family
Fagaceae
Berberidaceae
Genus
Quercus
Jeffersonia
Clade
Angiosperms, Eudicots, Rosids
Angiosperms, Eudicots
Tribe
-
-
Subfamily
-
-
Number of Species
202
1
27800
👆🏻