Life Span
Perennial
Perennial
Type
Tree
Fruit
Origin
United States, California
Southern Asia, India, Melanesia, Australia
Types
-
oranges, grapefruit, lemons
Number of Varieties
8150
0
40000
👆🏻
Habitat
Woodland Garden Canopy
agricultural areas
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
7, 8, 9, 12, 13, 14, 15, 16, 18, 19, 20, 21, 22, 23, 24
Habit
Spreading
Oval or Rounded
Plant Size
Minimum Height
1,520.00 cm60.00 cm
0
3900
👆🏻
Minimum Width
1,370.00 cm244.00 cm
0
6350
👆🏻
Plant Color
Flower Color
Red, Yellow green
White, Purple, Ivory
Flower Color Modifier
Bicolor
Bicolor
Fruit Color
-
Yellow, Red, Green, Orange
Leaf Color in Spring
Green, Blue Green
Green, Dark Green
Leaf Color in Summer
Green, Blue Green
Green, Dark Green
Leaf Color in Fall
Yellow, Orange, Pink
Green, Dark Green
Leaf Color in Winter
-
Light Green
Shape
Leaf Shape
Irregular
Toothed
Thorns
✔
✘
✔
✘
Plant Season
Spring, Summer, Fall, Winter
Spring, Summer, Fall, Winter
Growing Conditions
Sunlight
Full Sun, Partial Sun
Full Sun, Partial Sun
Growth Rate
Slow
Medium
Type of Soil
-
Clay, Loam, Sand
The pH of Soil
-
Acidic, Neutral, Alkaline
Soil Drainage
-
Well drained
Bloom Time
Spring
-
Repeat Bloomer
✔
✘
✔
✘
Tolerances
Drought
Drought
Where to Plant?
Ground
Ground
How to Plant?
Seedlings
Seedlings, Stem Planting
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
-
Acidic, Neutral, Alkaline
Soil Type
-
Clay, Loam, Sand
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
Remove damaged leaves, Remove dead branches, Remove dead leaves
Fertilizers
All-Purpose Liquid Fertilizer
All-Purpose Liquid Fertilizer
Pests and Diseases
Red blotch
Red blotch
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
-
Glossy
Evergreen
✔
✘
✔
✘
Invasive
✔
✘
✔
✘
Self-Sowing
✔
✘
✔
✘
Attracts
Birds
Birds, Butterflies
Allergy
Pollen
Itchiness, Oral Allergy
Uses
Aesthetic Uses
Borders
-
Beauty Benefits
-
Good for skin and hair, Makes teeth white, Skin cleanser
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
Kidney Stones, Stomach Cancer
Part of Plant Used
Leaves, Seeds, Wood
Flowers, Fruits, Leaves
Other Uses
Adhesive, Basketary, Buttons, Repellent, Tannin, Used as fuel, Used for woodware
-
Used As Indoor Plant
✔
✘
✔
✘
Used As Outdoor Plant
✔
✘
✔
✘
Garden Design
Feature Plant, Shade Trees, Street Trees
Container, Edible, Feature Plant, Fruit / Fruit Tree, Houseplant, Shade Trees, Topiary / Bonsai / Espalier, Tropical
Botanical Name
QUERCUS douglasii
CITRUS
Common Name
Blue Oak
Citrus
In Hindi
Blue Oak Tree
निम्बू-वंश
In German
Blaue Eiche
Zitruspflanzen
In French
Bleu Oak Tree
Citrus
In Spanish
Azul del árbol de roble
Citrus
In Greek
Μπλε Oak Tree
Citrus
In Portuguese
Carvalho azul
Citrus é um género
In Polish
Niebieski Oak Tree
Cytrus
In Latin
Blue quercum ligno
citrus
Kingdom
Plantae
Plantae
Phylum
Magnoliophyta
Magnoliophyta
Class
Magnoliopsida
Magnoliopsida
Order
Fagales
Sapindales
Family
Fagaceae
Rutaceae
Genus
Quercus
Citrus
Clade
Angiosperms, Eudicots, Rosids
Angiosperms, Eudicots, Rosids
Tribe
-
Citreae
Subfamily
-
Asteroideae
Number of Species
2028
1
27800
👆🏻