Life Span
Perennial
Perennial
Type
Tree
Sedge or Rush
Origin
United States, California
Northeastern United States, Western Europe
Types
-
-
Number of Varieties
825
0
40000
👆🏻
Habitat
Woodland Garden Canopy
Grassland, moorlands
USDA Hardiness Zone
6-94-8
0
99
👆🏻
AHS Heat Zone
9-1
8-4
Sunset Zone
3a, 3b, 4, 5, 6, 7, 8, 9, 10, 11, 14, 15, 16, 17, 18, 19, 20, 21, 22, 23, 24
3a, 3b, 4, 5, 6, 7, 8, 9, 14, 15, 16, 17, 18, 19, 20, 21, 22, 23, 24
Habit
Spreading
Clump-Forming
Plant Size
Minimum Height
1,520.00 cm15.20 cm
0
3900
👆🏻
Minimum Width
1,370.00 cm15.20 cm
0
6350
👆🏻
Plant Color
Flower Color
Red, Yellow green
Yellow green
Flower Color Modifier
Bicolor
Bicolor
Fruit Color
-
Light brown
Leaf Color in Spring
Green, Blue Green
Blue Green, Gray Green, Gray
Leaf Color in Summer
Green, Blue Green
Blue Green, Gray Green, Gray
Leaf Color in Fall
Yellow, Orange, Pink
Blue Green, Gray Green, Gray
Leaf Color in Winter
-
-
Shape
Leaf Shape
Irregular
Long hair-like leaves
Thorns
✔
✘
✔
✘
Plant Season
Spring, Summer, Fall, Winter
Spring, Summer, Fall
Growing Conditions
Sunlight
Full Sun, Partial Sun
Partial Sun, Partial shade
Growth Rate
Slow
Medium
Type of Soil
-
Clay, Loam, Sand
The pH of Soil
-
Acidic, Neutral, Alkaline
Soil Drainage
-
Average
Bloom Time
Spring
Early Summer
Repeat Bloomer
✔
✘
✔
✘
Tolerances
Drought
Drought
Where to Plant?
Ground
Ground
How to Plant?
Seedlings
Divison
Plant Maintenance
Medium
Low
Watering Plants
Watering Requirements
Average Water Needs
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
Soil Type
-
Clay, Loam, Sand
Soil Drainage Capacity
-
Average
Sun Exposure
Full Sun, Partial Sun
Partial Sun, Partial 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
Aphids, Brown Spots, Galls
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
Fine
Foliage Sheen
-
Matte
Evergreen
✔
✘
✔
✘
Invasive
✔
✘
✔
✘
Self-Sowing
✔
✘
✔
✘
Attracts
Birds
Wildlife
Allergy
Pollen
-
Uses
Aesthetic Uses
Borders
Cottage Garden, Ground Cover, Landscape Designing
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
-
Part of Plant Used
Leaves, Seeds, Wood
Leaves
Other Uses
Adhesive, Basketary, Buttons, Repellent, Tannin, Used as fuel, Used for woodware
Used for Landscaping
Used As Indoor Plant
✔
✘
✔
✘
Used As Outdoor Plant
✔
✘
✔
✘
Garden Design
Feature Plant, Shade Trees, Street Trees
Edging, Groundcover, Mixed Border
Botanical Name
QUERCUS douglasii
CAREX flacca
Common Name
Blue Oak
blue sedge, gray carex, glaucous sedge, carnation-grass
In Hindi
Blue Oak Tree
ब्लू सेज
In German
Blaue Eiche
Blau-Segge
In French
Bleu Oak Tree
Bleu carex
In Spanish
Azul del árbol de roble
azul de la juncia
In Greek
Μπλε Oak Tree
μπλε σπαθόχορτο
In Portuguese
Carvalho azul
azul Sedge
In Polish
Niebieski Oak Tree
niebieski turzyca
In Latin
Blue quercum ligno
blue Sedge
Kingdom
Plantae
Plantae
Phylum
Magnoliophyta
Magnoliophyta
Class
Magnoliopsida
Liliopsida
Order
Fagales
Cyperales
Family
Fagaceae
Cyperaceae
Genus
Quercus
Carex
Clade
Angiosperms, Eudicots, Rosids
Angiosperms, Commelinids, Monocots
Tribe
-
-
Subfamily
-
-
Number of Species
202000
1
27800
👆🏻