Life Span
Perennial
Perennial
Type
Tree
Tree
Origin
United States, California
North America, United States, Northwestern United States, Alaska, California, Canada
Types
-
-
Number of Varieties
830
0
40000
👆🏻
Habitat
Woodland Garden Canopy
Lowland evergreen rainforest
USDA Hardiness Zone
6-94-7
0
99
👆🏻
AHS Heat Zone
9-1
7-1
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, 14, 15, 16, 17
Habit
Spreading
Pyramidal
Plant Size
Minimum Height
1,520.00 cm1,370.00 cm
0
3900
👆🏻
Minimum Width
1,370.00 cm610.00 cm
0
6350
👆🏻
Plant Color
Flower Color
Red, Yellow green
Yellow, Red, Coral
Flower Color Modifier
Bicolor
Bicolor
Fruit Color
-
Brown
Leaf Color in Spring
Green, Blue Green
Green, Dark Green
Leaf Color in Summer
Green, Blue Green
Dark Green
Leaf Color in Fall
Yellow, Orange, Pink
Dark Green
Leaf Color in Winter
-
-
Shape
Leaf Shape
Irregular
Ovate
Thorns
✔
✘
✔
✘
Plant Season
Spring, Summer, Fall, Winter
Spring, Summer, Fall
Growing Conditions
Sunlight
Full Sun, Partial Sun
Full Sun, Partial Sun, Partial shade
Growth Rate
Slow
Fast
Type of Soil
-
Loam, Sand
The pH of Soil
-
Acidic, Neutral, Alkaline
Soil Drainage
-
Average
Bloom Time
Spring
Early Spring
Repeat Bloomer
✔
✘
✔
✘
Tolerances
Drought
Maritime exposure, Salt water
Where to Plant?
Ground
Ground
How to Plant?
Seedlings
Layering, Seedlings
Plant Maintenance
Medium
Medium
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
-
Loam, Sand
Soil Drainage Capacity
-
Average
Sun Exposure
Full Sun, Partial Sun
Full 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, Nitrogen
Pests and Diseases
Red blotch
-
Plant Tolerance
Drought
Maritime exposure, Salt water
Flowers
Insignificant
Insignificant
Flower Petal Number
-
-
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
-
Glossy
Evergreen
✔
✘
✔
✘
Invasive
✔
✘
✔
✘
Self-Sowing
✔
✘
✔
✘
Attracts
Birds
Insects
Allergy
Pollen
-
Uses
Aesthetic Uses
Borders
-
Beauty Benefits
-
Skin Problems
Edible Uses
✔
✘
✔
✘
Environmental Uses
Air purification, Shadow Tree, soil erosion prevension on hill slopes, Wildlife, Windbreak
Air purification, Prevent Soil Erosion, Shadow Tree
Plant Benefits
Medicinal Uses
Astringent, Diarrhea, Dysentry, Haemorrhages, Poultice, Sore Eyes, Sore throat
Anodyne, Appetizer, Astringent
Part of Plant Used
Leaves, Seeds, Wood
Flowers, Inner Bark, Sap
Other Uses
Adhesive, Basketary, Buttons, Repellent, Tannin, Used as fuel, Used for woodware
Used as a dye, used for making charcoal, Used for making informal hedge
Used As Indoor Plant
✔
✘
✔
✘
Used As Outdoor Plant
✔
✘
✔
✘
Garden Design
Feature Plant, Shade Trees, Street Trees
Screening / Wind Break, Shade Trees
Botanical Name
QUERCUS douglasii
ALNUS rubra
Common Name
Blue Oak
Oregon Alder, Red Alder
In Hindi
Blue Oak Tree
red alder
In German
Blaue Eiche
rot-Erle
In French
Bleu Oak Tree
aulne rouge
In Spanish
Azul del árbol de roble
aliso rojo
In Greek
Μπλε Oak Tree
κόκκινη σκλήθρα
In Portuguese
Carvalho azul
amieiro vermelho
In Polish
Niebieski Oak Tree
czerwony olcha
In Latin
Blue quercum ligno
red alnus
Kingdom
Plantae
Plantae
Phylum
Magnoliophyta
Magnoliophyta
Class
Magnoliopsida
Magnoliopsida
Order
Fagales
Fagales
Family
Fagaceae
Betulaceae
Genus
Quercus
Alnus
Clade
Angiosperms, Eudicots, Rosids
Angiosperms, Eudicots, Rosids
Tribe
-
-
Subfamily
-
-
Number of Species
2035
1
27800
👆🏻