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Stewartia pseudocamellia - Maxim.

Common Name Japanese Stewartia
Family Theaceae
USDA hardiness 4-7
Known Hazards None known
Habitats Semi-shaded habitats in moist woodland in mountains[58, 200].
Range E. Asia - C. and S. Japan.
Edibility Rating    (1 of 5)
Other Uses    (2 of 5)
Weed Potential No
Medicinal Rating    (0 of 5)
Care (info)
Fully Hardy Moist Soil Semi-shade Full sun
Stewartia pseudocamellia Japanese Stewartia

Stewartia pseudocamellia Japanese Stewartia


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Bloom Color: White. Main Bloom Time: Early summer, Late summer, Mid summer. Form: Oval, Pyramidal.

Physical Characteristics

 icon of manicon of lolypop
Stewartia pseudocamellia is a deciduous Tree growing to 15 m (49ft) by 8 m (26ft) at a slow rate.
See above for USDA hardiness. It is hardy to UK zone 5. It is in flower from July to August. The species is hermaphrodite (has both male and female organs) and is pollinated by Insects.
Suitable for: light (sandy), medium (loamy) and heavy (clay) soils. Suitable pH: mildly acid and neutral soils. It can grow in semi-shade (light woodland) or no shade. It prefers moist soil.

UK Hardiness Map US Hardiness Map


Stuartia pseudocamellia. Maxim.

Plant Habitats

Woodland Garden Canopy;

Edible Uses

Edible Parts: Leaves
Edible Uses:

Young leaves - cooked[177].

References   More on Edible Uses

Medicinal Uses

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None known

References   More on Medicinal Uses

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Other Uses

Landscape Uses: Espalier, Pest tolerant, Standard, Specimen, Street tree.

Special Uses


References   More on Other Uses

Cultivation details

Requires a deep humus-rich moist but not boggy soil[200]. Dislikes limey soils, preferring peaty conditions[11, 200]. Prefers a position with some shade, at least from the midday sun[200]. Another report says that it prefers a sunny sheltered position[11]. Hardy to about -20°c[200]. Resents root disturbance, plants should be put in their permanent positions as soon as possible[11, 200]. Plants in this genus are notably resistant to honey fungus[200]. Special Features:Not North American native, Attractive flowers or blooms.

References   Carbon Farming Information and Carbon Sequestration Information

Temperature Converter

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Plant Propagation

Seed - best sown as soon as it is ripe in a cold frame or in an outdoor seedbed if there is sufficient seed[78]. Stored seed is best soaked for 3 days in warm water and then given 3 - 5 months warm stratification followed by 3 months cold stratification at 5°c, it can take 18 months to germinate[78]. Prick out the seedlings into individual pots once they are large enough to handle and grow them on in a cold frame for their first winter. Plant out in early summer. Cuttings of short side branches, 8cm with a heel, July/August in a frame[1, 200]. One report says it is best to keep the cuttings growing through the winter if possible[1] whilst another says they should be allowed to become dormant once they have rooted[200]. Layering.

Other Names

If available other names are mentioned here

TEMPERATE ASIA: Japan (Honshu, Kyushu, Shikoku), Korea, South

Weed Potential

Right plant wrong place. We are currently updating this section. Please note that a plant may be invasive in one area but may not in your area so it’s worth checking.

Conservation Status

IUCN Red List of Threatened Plants Status :

Related Plants
Latin NameCommon NameHabitHeightHardinessGrowthSoilShadeMoistureEdibleMedicinalOther

Growth: S = slow M = medium F = fast. Soil: L = light (sandy) M = medium H = heavy (clay). pH: A = acid N = neutral B = basic (alkaline). Shade: F = full shade S = semi-shade N = no shade. Moisture: D = dry M = Moist We = wet Wa = water.


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Botanical References


Links / References

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Readers comment

Zhizhang Zhang   Sun Nov 16 14:24:54 2003

I prefer this web. It could be better, if some picture could be added here.

Coby Galazka   Sat Jan 8 19:15:05 2005

How long does it take before the Stewartia blooms? We live in Northwest Connecticut. We planted ours four years ago.

Steve Mach   Thu May 27 15:34:42 2004

There is much more to know and appreciate about Stewartias if you have propagated or grown them, i.e. spent time with them. They are in the same family as tea, camellia, franklinia. There are interesting differences between and within varieties - and surprisingly little information on the web. We live North of Seattle along the coast. We have several older "common type" pseudocamellia tres, i.e. the buds and flowers are on distinct stems rather than within rosettes of reddish leaves as in the rostrata type.

I much prefer the rostrata in appearance of flowers (a bit of pink) and more lanquid manner of growth - and the flowers are mildly fragrant.

I have germinated and grown the native ovata from seed but it needs a different culture - after a few years I believe I lost them to sun, heat, and lack of moisture over a summer season.

I obtained some gemmata seed - described on the web as:

Supposedly the same as S. sinensis but plants grown from this seed have produced plants very different from any other stewartia we grow. Stunning strong growing plants. Light green foliage, shades of red and pink in autumn. Flowers probably white.

We'll see - the seed I purchased germinated and they are just getting their first true leaves.

Link: Schumacher Seed tree and shrub seeds also www.sheffields.com, Sheffields Seeds

Kate   Wed Jun 27 2007

I planted both a Japanese and a Korean Stewartia 2 years ago in a sunny spot. Both leave out very nicely but now in late June the leaves are again this year turning brown on the ends and curling up. We have had lots of rain but they are in well draining locations. What could be the problem. Also, no blooms this year at all. Thanks so much for any help on this.

Lo Bouwens   Thu Sep 11 2008

We have a Stuartia pseudocamellia in our very sunny garden (Côte dÁzur, France), it is about 4 meters high and has pink flowers. On the internet I can only find explanations on white ones. Or is there a tree that has the same trunk and leaves, but is not a Stuartia Pseudocamellia when the flowers are hard pink, almost red? In that case, can you tell me waht the name is? Lo Bouwens (Grasse - France)

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