Life Span
Perennial
Perennial
Type
Tree
Fruit
Origin
United States, California
Southeastern Asia, Japan
Types
-
Clementines, dancy, fallglo, lee
Number of Varieties
850
0
40000
👆🏻
Habitat
Woodland Garden Canopy
Subtropical climates, Tropical regions
USDA Hardiness Zone
6-98-11
0
99
👆🏻
AHS Heat Zone
9-1
10-8
Sunset Zone
3a, 3b, 4, 5, 6, 7, 8, 9, 10, 11, 14, 15, 16, 17, 18, 19, 20, 21, 22, 23, 24
H1, H2, 8, 9, 12, 13, 14, 15, 16, 17, 18, 19, 20, 21, 22, 23, 24
Habit
Spreading
Oval or Rounded
Plant Size
Minimum Height
1,520.00 cm300.00 cm
0
3900
👆🏻
Minimum Width
1,370.00 cm300.00 cm
0
6350
👆🏻
Plant Color
Flower Color
Red, Yellow green
White, Red, Purple
Flower Color Modifier
Bicolor
Bicolor
Fruit Color
-
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
Lance shaped
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
-
Loam, Sand
The pH of Soil
-
Acidic, Neutral
Soil Drainage
-
Well drained
Bloom Time
Spring
Spring, Late Spring, Early Summer
Repeat Bloomer
✔
✘
✔
✘
Tolerances
Drought
Drought
Where to Plant?
Ground
Ground
How to Plant?
Seedlings
Grafting, Seedlings
Plant Maintenance
Medium
Medium
Watering Plants
Watering Requirements
Average Water Needs
Average Water Needs, occasional watering once established, Water more in summer
In Summer
Lots of watering
Lots of watering
In Spring
Moderate
Moderate
In Winter
Average Water
Average Water
Soil
Soil pH
-
Acidic, Neutral
Soil Type
-
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, Requires little pruning
Fertilizers
All-Purpose Liquid Fertilizer
20-10-10, All-Purpose Liquid Fertilizer
Pests and Diseases
Red blotch
Aphids, Beetles, Earwigs, Leafminers, Red blotch
Plant Tolerance
Drought
Cold climate, 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
Beetles, Birds, Butterflies, Insects, Leaf Hoppers, Rabbits
Allergy
Pollen
-
Uses
Aesthetic Uses
Borders
-
Beauty Benefits
-
Glowing Skin, Skin Problems
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
Aging, Antioxidants, High blood pressure, High cholestrol, Skin Disorders
Part of Plant Used
Leaves, Seeds, Wood
Fruits
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, Feature Plant, Fruit / Fruit Tree, Hedges, Houseplant, Mixed Border, Topiary / Bonsai / Espalier
Botanical Name
QUERCUS douglasii
CITRUS reticulata 'Armstrong'
Common Name
Blue Oak
Armstrong Tangerine, Tangerine
In Hindi
Blue Oak Tree
संतरा
In German
Blaue Eiche
Mandarine
In French
Bleu Oak Tree
mandarine
In Spanish
Azul del árbol de roble
mandarina
In Greek
Μπλε Oak Tree
μανταρίνι
In Portuguese
Carvalho azul
tangerina
In Polish
Niebieski Oak Tree
mandarynka
In Latin
Blue quercum ligno
Tangerine
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
-
-
Subfamily
-
-
Number of Species
2020
1
27800
👆🏻