Life Span
Perennial
Perennial
Type
Shrub
Tree
Origin
China, Japan
United States, California
Types
-
-
Number of Varieties
58
0
40000
👆🏻
Habitat
subtropical regions, Temperate Regions
Woodland Garden Canopy
USDA Hardiness Zone
6-96-9
0
99
👆🏻
AHS Heat Zone
9-7
9-1
Sunset Zone
4, 5, 6, 7, 8, 9, 10, 11, 12, 13, 14, 15, 16, 17, 18, 19, 20, 21, 22, 23, 24
3a, 3b, 4, 5, 6, 7, 8, 9, 10, 11, 14, 15, 16, 17, 18, 19, 20, 21, 22, 23, 24
Habit
Oval or Rounded
Spreading
Plant Size
Minimum Height
300.00 cm1,520.00 cm
0
3900
👆🏻
Minimum Width
300.00 cm1,370.00 cm
0
6350
👆🏻
Plant Color
Flower Color
White, Silver
Red, Yellow green
Flower Color Modifier
-
Bicolor
Fruit Color
Reddish Plum
-
Leaf Color in Spring
White, Dark Green, Sienna
Green, Blue Green
Leaf Color in Summer
White, Dark Green, Sienna
Green, Blue Green
Leaf Color in Fall
White, Dark Green, Sienna
Yellow, Orange, Pink
Leaf Color in Winter
White, Dark Green, Sienna
-
Shape
Leaf Shape
broad, flat
Irregular
Thorns
✔
✘
✔
✘
Plant Season
Spring, Summer, Fall, Winter
Spring, Summer, Fall, Winter
Growing Conditions
Sunlight
Full Sun, Partial Sun, Partial shade
Full Sun, Partial Sun
Growth Rate
Fast
Slow
Type of Soil
Clay, Loam, Sand
-
The pH of Soil
Acidic, Neutral, Alkaline
-
Soil Drainage
Well drained
-
Bloom Time
Fall, Late Fall
Spring
Repeat Bloomer
✔
✘
✔
✘
Tolerances
Pollution, Salt
Drought
Where to Plant?
Ground, Pot
Ground
How to Plant?
Cuttings, root cutting, 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
Clay, Loam, Sand
-
Soil Drainage Capacity
Well drained
-
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
All-Purpose Liquid Fertilizer
Pests and Diseases
Coral Spot, Leaf spot, Red blotch
Red blotch
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
Medium
Foliage Sheen
Matte
-
Evergreen
✔
✘
✔
✘
Invasive
✔
✘
✔
✘
Self-Sowing
✔
✘
✔
✘
Attracts
Birds
Birds
Allergy
Toxic
Pollen
Uses
Aesthetic Uses
Bonsai, Cottage Garden, Ground Cover
Borders
Beauty Benefits
Skin irritation
-
Edible Uses
✔
✘
✔
✘
Environmental Uses
Fixes Nitrogen
Air purification, Shadow Tree, soil erosion prevension on hill slopes, Wildlife, Windbreak
Plant Benefits
Medicinal Uses
Antiasthamatic, Antitussive, Astringent
Astringent, Diarrhea, Dysentry, Haemorrhages, Poultice, Sore Eyes, Sore throat
Part of Plant Used
Fruits, Leaves, Root, Stem
Leaves, Seeds, Wood
Other Uses
Used as Ornamental plant, Used for making hedge
Adhesive, Basketary, Buttons, Repellent, Tannin, Used as fuel, Used for woodware
Used As Indoor Plant
✔
✘
✔
✘
Used As Outdoor Plant
✔
✘
✔
✘
Garden Design
Feature Plant, Hedges, Screening, Wind Break
Feature Plant, Shade Trees, Street Trees
Botanical Name
Elaeagnus pungens
QUERCUS douglasii
Common Name
Silverthorn
Blue Oak
In Hindi
Silverthorn
Blue Oak Tree
In German
Silverthorn
Blaue Eiche
In French
Silverthorn
Bleu Oak Tree
In Spanish
Silverthorn
Azul del árbol de roble
In Greek
Silverthorn
Μπλε Oak Tree
In Portuguese
Silverthorn
Carvalho azul
In Polish
Silverthorn
Niebieski Oak Tree
In Latin
Silverthorn
Blue quercum ligno
Kingdom
Plantae
Plantae
Phylum
Magnoliophyta
Magnoliophyta
Class
Magnoliopsida
Magnoliopsida
Order
Rhamnales
Fagales
Family
Elaeagnaceae
Fagaceae
Genus
Elaeagnus
Quercus
Clade
Angiosperms, Eudicots, Rosids
Angiosperms, Eudicots, Rosids
Tribe
-
-
Subfamily
-
-
Number of Species
7020
1
27800
👆🏻