Life Span
Perennial
Perennial
Type
Tree
Tree
Origin
North America, United States, Northwestern United States, Alaska, California, Canada
United States, California
Types
-
-
Number of Varieties
308
0
40000
👆🏻
Habitat
Lowland evergreen rainforest
Woodland Garden Canopy
USDA Hardiness Zone
4-76-9
0
99
👆🏻
AHS Heat Zone
7-1
9-1
Sunset Zone
3a, 3b, 4, 5, 6, 7, 14, 15, 16, 17
3a, 3b, 4, 5, 6, 7, 8, 9, 10, 11, 14, 15, 16, 17, 18, 19, 20, 21, 22, 23, 24
Habit
Pyramidal
Spreading
Plant Size
Minimum Height
1,370.00 cm1,520.00 cm
0
3900
👆🏻
Minimum Width
610.00 cm1,370.00 cm
0
6350
👆🏻
Plant Color
Flower Color
Yellow, Red, Coral
Red, Yellow green
Flower Color Modifier
Bicolor
Bicolor
Fruit Color
Brown
-
Leaf Color in Spring
Green, Dark Green
Green, Blue Green
Leaf Color in Summer
Dark Green
Green, Blue Green
Leaf Color in Fall
Dark Green
Yellow, Orange, Pink
Leaf Color in Winter
-
-
Shape
Leaf Shape
Ovate
Irregular
Thorns
✔
✘
✔
✘
Plant Season
Spring, Summer, Fall
Spring, Summer, Fall, Winter
Growing Conditions
Sunlight
Full Sun, Partial Sun, Partial shade
Full Sun, Partial Sun
Growth Rate
Fast
Slow
Type of Soil
Loam, Sand
-
The pH of Soil
Acidic, Neutral, Alkaline
-
Soil Drainage
Average
-
Bloom Time
Early Spring
Spring
Repeat Bloomer
✔
✘
✔
✘
Tolerances
Maritime exposure, Salt water
Drought
Where to Plant?
Ground
Ground
How to Plant?
Layering, Seedlings
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, Partial shade
Full Sun, Partial Sun
Pruning
Remove damaged leaves, Remove dead branches, Remove dead leaves
Remove damaged leaves, Remove dead branches, Remove dead leaves, Remove dead or diseased plant parts
Fertilizers
All-Purpose Liquid Fertilizer, Nitrogen
All-Purpose Liquid Fertilizer
Pests and Diseases
-
Red blotch
Plant Tolerance
Maritime exposure, Salt water
Drought
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
Insects
Birds
Allergy
-
Pollen
Uses
Aesthetic Uses
-
Borders
Beauty Benefits
Skin Problems
-
Edible Uses
✔
✘
✔
✘
Environmental Uses
Air purification, Prevent Soil Erosion, Shadow Tree
Air purification, Shadow Tree, soil erosion prevension on hill slopes, Wildlife, Windbreak
Plant Benefits
Medicinal Uses
Anodyne, Appetizer, Astringent
Astringent, Diarrhea, Dysentry, Haemorrhages, Poultice, Sore Eyes, Sore throat
Part of Plant Used
Flowers, Inner Bark, Sap
Leaves, Seeds, Wood
Other Uses
Used as a dye, used for making charcoal, Used for making informal hedge
Adhesive, Basketary, Buttons, Repellent, Tannin, Used as fuel, Used for woodware
Used As Indoor Plant
✔
✘
✔
✘
Used As Outdoor Plant
✔
✘
✔
✘
Garden Design
Screening / Wind Break, Shade Trees
Feature Plant, Shade Trees, Street Trees
Botanical Name
ALNUS rubra
QUERCUS douglasii
Common Name
Oregon Alder, Red Alder
Blue Oak
In Hindi
red alder
Blue Oak Tree
In German
rot-Erle
Blaue Eiche
In French
aulne rouge
Bleu Oak Tree
In Spanish
aliso rojo
Azul del árbol de roble
In Greek
κόκκινη σκλήθρα
Μπλε Oak Tree
In Portuguese
amieiro vermelho
Carvalho azul
In Polish
czerwony olcha
Niebieski Oak Tree
In Latin
red alnus
Blue quercum ligno
Kingdom
Plantae
Plantae
Phylum
Magnoliophyta
Magnoliophyta
Class
Magnoliopsida
Magnoliopsida
Order
Fagales
Fagales
Family
Betulaceae
Fagaceae
Genus
Alnus
Quercus
Clade
Angiosperms, Eudicots, Rosids
Angiosperms, Eudicots, Rosids
Tribe
-
-
Subfamily
-
-
Number of Species
3520
1
27800
👆🏻