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Lovely dainty leaves hang from blue culms with cream sheaths on a Thyrsostachys siamensis Monastery Thai Bamboo in sunshine
Yellow culms and weeping green leaves on a tall clump of Thyrsostachys siamensis Thai Monastery Bamboo | Heartwood Seeds UK
Elongated and thin bright green leaf blades of a Thyrsostachys siamensis Monastery Thai Bamboo shine in morning sun and rain
Thyrsostachys siamensis Thai Monastery Bamboo seeds
Heartwood seed pack, business card and teapot - Thyrsostachys siamensis

Thyrsostachys siamensis (Giant Thai Monastery Bamboo) | 5 - 1,000 Seeds | £3.49 - £289.99

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Thyrsostachys siamensis - Giant Thai Monastery Bamboo


A tall and upright, clumping bamboo (non-invasive), native to China, Thailand and Vietnam and other countries within South East Asia. Growing to around 20-40 feet in height within its native provenance, it will typically reach around 20 feet tall within temperate Europe.

New shoots start off purple, with the culms changing from green to yellow with age. The 5cm leaf blades are especially long and narrow within this species and eventually form a weeping canopy of dainty foliage which look lovely blowing in the wind.

Once established, clumps can survive temperatures of -4ºC (24ºF), but the key is to keep the soil on the dry side during any frost. Protect any bamboos under the age of 2-3 years old from any frost using sheeting or a horticultural fleece.

This clump-forming species is also cultivated and harvested for its strong canes, frequently used within construction within its native bamboo tree forests

Bamboo seeds are not always available due to worldwide shortages of most species; this is because they rarely flower, sometimes only every 30 to even 100 years (called gregarious flowering)


Please note: full germination instructions are printed on each pack


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© Heartwood - supplying rare and unusual plants and seeds to the curious grower




Genus: Thyrsostachys


Species: siamensis


English name: Giant Thai Monastery Bamboo / Thai Bamboo


Plant type: Clump-forming bamboo (non-invasive)


Eventual height: 20 feet (7 m) within temperate Europe


Season of Interest: All seasons


Hardiness: Hardy to -4ºC (24ºF): keep soil on drier side during frost


Shelter: from very cold winds


Sun Exposure: Eventually full sun to partial-shade -but keep plants under 1 year old out of direct sunlight


Soil: Moist, fertile and well-drained; water well in hotter months


Propagation methods: Seeds, or division of clumps



Please note: This species is not permitted entry into the United States or South Korea


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Rest of World

All orders are sent via Royal Mail International Airmail (Tracked & Signed)

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