Life Span
Perennial
Annual
Type
Tree
Herbs
Origin
United States, California
Europe
Types
-
-
Number of Varieties
815
0
40000
👆🏻
Habitat
Woodland Garden Canopy
Pastures, Woodlands
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
A2, 1a, 1b, 2a, 2b, 3a, 3b, 4, 5, 6, 7, 8, 9, 10, 11, 12, 13, 14, 15, 16, 17, 18, 19, 20, 21, 22, 23, 24
Habit
Spreading
Clump-Forming
Plant Size
Minimum Height
1,520.00 cm45.70 cm
0
3900
👆🏻
Minimum Width
1,370.00 cm30.50 cm
0
6350
👆🏻
Plant Color
Flower Color
Red, Yellow green
Blue
Flower Color Modifier
Bicolor
Bicolor
Fruit Color
-
Brown
Leaf Color in Spring
Green, Blue Green
Green, Light Green
Leaf Color in Summer
Green, Blue Green
Green, Light Green
Leaf Color in Fall
Yellow, Orange, Pink
Green, Light Green
Leaf Color in Winter
-
Light Green
Shape
Leaf Shape
Irregular
Oval
Thorns
✔
✘
✔
✘
Plant Season
Spring, Summer, Fall, Winter
Spring, Summer, Fall
Growing Conditions
Sunlight
Full Sun, Partial Sun
Full Sun, Partial Sun
Growth Rate
Slow
Very Fast
Type of Soil
-
Loam
The pH of Soil
-
Neutral
Soil Drainage
-
Well drained
Bloom Time
Spring
Indeterminate
Repeat Bloomer
✔
✘
✔
✘
Tolerances
Drought
Drought
Where to Plant?
Ground
Ground
How to Plant?
Seedlings
Seedlings
Plant Maintenance
Medium
Medium
Watering Plants
Watering Requirements
Average Water Needs
Keep ground moist
In Summer
Lots of watering
Lots of watering
In Spring
Moderate
Moderate
In Winter
Average Water
Average Water
Soil
Soil pH
-
Neutral
Soil Type
-
Loam
Soil Drainage Capacity
-
Well drained
Sun Exposure
Full Sun, Partial Sun
Full Sun, Partial Sun
Pruning
Remove damaged leaves, Remove dead branches, Remove dead leaves, Remove dead or diseased plant parts
Prune regularly, Remove dead or diseased plant parts
Fertilizers
All-Purpose Liquid Fertilizer
fertilize in growing season
Pests and Diseases
Red blotch
Japanese Beetles
Plant Tolerance
Drought
Drought
Flowers
Insignificant
Showy
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
Medium
Foliage Sheen
-
Matte
Evergreen
✔
✘
✔
✘
Invasive
✔
✘
✔
✘
Self-Sowing
✔
✘
✔
✘
Attracts
Birds
Bees
Allergy
Pollen
belching, bloating, Diarrhea, Digestive Problems, gas, gastro-intestinal problems, Headache, Nausea
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
Demulcent, Diuretic, Emollient, Fever, Kidney problems, Pulmonary afflictions
Part of Plant Used
Leaves, Seeds, Wood
Flowers, Leaves, Seeds
Other Uses
Adhesive, Basketary, Buttons, Repellent, Tannin, Used as fuel, Used for woodware
Used for its medicinal properties
Used As Indoor Plant
✔
✘
✔
✘
Used As Outdoor Plant
✔
✘
✔
✘
Garden Design
Feature Plant, Shade Trees, Street Trees
Container, Edible, Herb / Vegetable, Mixed Border
Botanical Name
QUERCUS douglasii
BORAGO officinalis
Common Name
Blue Oak
Borage, starflower
In Hindi
Blue Oak Tree
Borage
In German
Blaue Eiche
Borretsch
In French
Bleu Oak Tree
Bourrache
In Spanish
Azul del árbol de roble
borraja
In Greek
Μπλε Oak Tree
Borage
In Portuguese
Carvalho azul
Borragem
In Polish
Niebieski Oak Tree
Ogórecznik
In Latin
Blue quercum ligno
borage
Kingdom
Plantae
Plantae
Phylum
Magnoliophyta
Magnoliophyta
Class
Magnoliopsida
Magnoliopsida
Order
Fagales
Lamiales
Family
Fagaceae
Boraginaceae
Genus
Quercus
Borago
Clade
Angiosperms, Eudicots, Rosids
Angiosperms, Asterids, Eudicots
Tribe
-
-
Subfamily
-
-
Number of Species
20150
1
27800
👆🏻