Life Span
Perennial
Perennial
Type
Tree
Needled or Scaled Evergreen
Origin
Japan
Northwestern United States, Canada
Types
Korean Stewartia – S. koreana
Silky Stewartia – S. malacodendron
Tall Stewartia – S. monadelpha
Mountain Stewartia – S. ovata
Japanese Stewartia – S. pseudocamellia
-
Number of Varieties
156
0
40000
👆🏻
Habitat
Loamy soils, Well Drained
Lowland, Moist Soils, Swamps
USDA Hardiness Zone
5-85-7
0
99
👆🏻
AHS Heat Zone
8-1
8-1
Sunset Zone
4, 5, 6, 14, 15, 16, 17, 20, 21
A3, 1a, 1b, 2a, 2b, 3a, 3b, 4, 5, 6, 7, 8, 9, 14, 15, 16, 17, 18, 19, 20, 21, 22, 23, 24
Habit
Oval or Rounded
Pyramidal
Plant Size
Minimum Height
460.00 cm1,520.00 cm
0
3900
👆🏻
Minimum Width
610.00 cm760.00 cm
0
6350
👆🏻
Plant Color
Flower Color
White
Light Yellow
Flower Color Modifier
Bicolor
Bicolor
Fruit Color
Brown
Brown, Sienna
Leaf Color in Spring
Light Green
Dark Green
Leaf Color in Summer
Green, Dark Green
Dark Green
Leaf Color in Fall
Yellow, Red, Orange
Dark Green
Leaf Color in Winter
-
Dark Green, Bronze
Shape
Leaf Shape
Obtuse
Scale-like imbricate
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
Fast
Type of Soil
Loam
Loam
The pH of Soil
Acidic, Neutral
Acidic, Neutral
Soil Drainage
Well drained
Well drained
Bloom Time
Early Summer, Summer
Spring
Repeat Bloomer
✔
✘
✔
✘
Tolerances
-
Pollution, Soil Compaction
Where to Plant?
Ground
Ground
How to Plant?
Seedlings
Cuttings, Hardwood Cuttings, Rooted stem cutting, Seedlings
Plant Maintenance
Medium
Medium
Watering Plants
Watering Requirements
Average Water Needs, Does not require lot of watering
Average Water Needs, Needs a lot of moisture in the growing season, when new, water every week
In Summer
Lots of watering
Lots of watering
In Spring
Moderate
Moderate
In Winter
Average Water
Average Water
Soil
Soil pH
Acidic, Neutral
Acidic, Neutral, Alkaline
Soil Type
Loam
Clay, Loam, Sand
Soil Drainage Capacity
Well drained
Well drained
Sun Exposure
Full Sun, Partial Sun
Full Sun
Pruning
Remove damaged leaves, Remove dead branches, Remove dead leaves
Remove damaged leaves, Remove dead branches, Remove dead leaves
Fertilizers
All-Purpose Liquid Fertilizer
All-Purpose Liquid Fertilizer
Pests and Diseases
Red blotch
Armillaria root rot, Bark beetles
Plant Tolerance
Drought
Drought
Flowers
Showy
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
Fine
Foliage Sheen
Matte
Glossy
Evergreen
✔
✘
✔
✘
Invasive
✔
✘
✔
✘
Self-Sowing
✔
✘
✔
✘
Attracts
-
-
Allergy
-
Asthma, contact allergic dermatitis, Urticaria
Uses
Aesthetic Uses
Beautification
-
Beauty Benefits
-
-
Edible Uses
✔
✘
✔
✘
Environmental Uses
Air purification
Air purification
Plant Benefits
Medicinal Uses
-
Bronchitis, Cold, Cough, Fever, Sore throat
Part of Plant Used
Leaves, Wood
Branch, Inner Bark, Leaves, Wood
Other Uses
-
Dugout canoes, Making deodorants, Medicinal oil, Paper pulp, Pulp can be used to make rope place mats and other goods, Used as an insecticide, Used to make baskets
Used As Indoor Plant
✔
✘
✔
✘
Used As Outdoor Plant
✔
✘
✔
✘
Garden Design
Feature Plant, Foundation, Mixed Border, Shade Trees, Street Trees
Feature Plant, Hedges, Screening / Wind Break
Botanical Name
STEWARTIA pseudocamellia
THUJA plicata
Common Name
Japanese Stewartia
Giant Arborvitae, Green Giant Arborvitae, Western Arborvitae, Western Red Cedar
In Hindi
Japanese Stewartia
Pacific redcedar
In German
japanische Stewartia
Riesen-Lebensbaum
In French
japanische Stewartia
Thuja plicata
In Spanish
Stewartia japonesa
Thuja plicata
In Greek
Japanese Stewartia
Thuja plicata
In Portuguese
Stewartia japonês
Thuja plicata
In Polish
japoński Stewartia
Żywotnik olbrzymi
In Latin
Stewartia Italica
Thuja plicata
Kingdom
Plantae
Plantae
Phylum
Tracheophyta
Pinophyta
Class
-
Pinopsida
Order
Ericales
Pinales
Family
Theaceae
Cupressaceae
Genus
Stewartia
Thuja
Clade
Angiosperms, Asterids, Eudicots
-
Tribe
-
-
Subfamily
-
-
Number of Species
715
1
27800
👆🏻