Life Span
Perennial
Perennial
Type
Tree
Sedge or Rush
Origin
United States, California
North America
Types
-
Grass
Number of Varieties
85
0
40000
👆🏻
Habitat
Woodland Garden Canopy
Lake margins, Lake Sides, Lakes
USDA Hardiness Zone
6-9-9999
0
99
👆🏻
AHS Heat Zone
9-1
-
Sunset Zone
3a, 3b, 4, 5, 6, 7, 8, 9, 10, 11, 14, 15, 16, 17, 18, 19, 20, 21, 22, 23, 24
7, 8, 9, 10, 11, 12, 13, 14, 15, 16, 17, 18, 19, 20, 21, 22, 23, 24
Habit
Spreading
Upright/Erect
Plant Size
Minimum Height
1,520.00 cm270.00 cm
0
3900
👆🏻
Minimum Width
1,370.00 cm150.00 cm
0
6350
👆🏻
Plant Color
Flower Color
Red, Yellow green
-
Flower Color Modifier
Bicolor
Bicolor
Fruit Color
-
-
Leaf Color in Spring
Green, Blue Green
Olive
Leaf Color in Summer
Green, Blue Green
Olive
Leaf Color in Fall
Yellow, Orange, Pink
Olive
Leaf Color in Winter
-
Sandy Brown
Shape
Leaf Shape
Irregular
Long linear and narrow
Thorns
✔
✘
✔
✘
Plant Season
Spring, Summer, Fall, Winter
Spring, Summer, Fall
Growing Conditions
Sunlight
Full Sun, Partial Sun
Full Sun
Growth Rate
Slow
Medium
Type of Soil
-
Clay, Loam, Sand
The pH of Soil
-
Acidic, Neutral, Alkaline
Soil Drainage
-
Poorly Drained
Bloom Time
Spring
-
Repeat Bloomer
✔
✘
✔
✘
Tolerances
Drought
Drought
Where to Plant?
Ground
Container, Ground
How to Plant?
Seedlings
Rhizome division, Seedlings
Plant Maintenance
Medium
Medium
Watering Plants
Watering Requirements
Average Water Needs
occasional watering once established
In Summer
Lots of watering
Lots of watering
In Spring
Moderate
Moderate
In Winter
Average Water
Average Water
Soil
Soil pH
-
Acidic, Neutral, Alkaline
Soil Type
-
Clay, Loam, Sand
Soil Drainage Capacity
-
Poorly Drained
Sun Exposure
Full Sun, Partial Sun
Full Sun
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
Aphids, Mealy bugs, Scale, Scale insects
Plant Tolerance
Drought
Drought
Flowers
Insignificant
Insignificant
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
Bold
Foliage Sheen
-
Glossy
Evergreen
✔
✘
✔
✘
Invasive
✔
✘
✔
✘
Self-Sowing
✔
✘
✔
✘
Attracts
Birds
Birds, Butterflies
Allergy
Pollen
Itchiness
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
Abscess, Snakebite, Wounds
Part of Plant Used
Leaves, Seeds, Wood
Rhizomes, Root, Seeds, Shoots, Stem
Other Uses
Adhesive, Basketary, Buttons, Repellent, Tannin, Used as fuel, Used for woodware
Used As Food
Used As Indoor Plant
✔
✘
✔
✘
Used As Outdoor Plant
✔
✘
✔
✘
Garden Design
Feature Plant, Shade Trees, Street Trees
Bog Garden, Water Gardens
Botanical Name
QUERCUS douglasii
Schoenoplectus Tabernaemontani
Common Name
Blue Oak
Grey Club-Rush, Great Bulrush, Softstem Bulrush
In Hindi
Blue Oak Tree
Softstem Bulrush
In German
Blaue Eiche
Softstem Bulrush
In French
Bleu Oak Tree
Softstem Bulrush
In Spanish
Azul del árbol de roble
Softstem Bulrush
In Greek
Μπλε Oak Tree
Softstem Bulrush
In Portuguese
Carvalho azul
Softstem Bulrush
In Polish
Niebieski Oak Tree
Softstem Bulrush
In Latin
Blue quercum ligno
Softstem Bulrush
Kingdom
Plantae
Plantae
Phylum
Magnoliophyta
Magnoliophyta
Class
Magnoliopsida
Liliopsida
Order
Fagales
Poales
Family
Fagaceae
Cyperaceae
Genus
Quercus
Schoenoplectus
Clade
Angiosperms, Eudicots, Rosids
Angiosperms, Commelinids, Monocots
Tribe
-
-
Subfamily
-
-
Number of Species
2035
1
27800
👆🏻