Thai IronwoodNobody has published a photograph of this tree under a licence we can use. Send us yours and it goes on this page.

The Ironwoods of Khlong Lot

Years old217-244
SpeciesThai Ironwood

Approximate location. Show us where it is

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How do I find it? You can recognise them by the count, five Thai ironwoods left of the seven standing in 1998, over the water. They stand along the Khlong Lot canal on Atsadang Road, behind Wat Ratchabophit.

Five ironwood trees standing over a Bangkok canal are, in effect, a two-century-old weapons reserve nobody ever needed to use again. King Rama I ordered Thai ironwood planted along Khlong Lot shortly after founding Bangkok in 1782, part of a hardwood stockpile meant to build warships for a kingdom still fighting Burma on a near-annual basis. Ironwood's real advantages, dense grain, genuine rot-resistance, and enough buoyancy once cut to float downriver, made it the standard timber for Siamese naval construction, and someone in the new capital planted with fleets in mind rather than gardens. The trees outlasted every war they were grown for and most of what came after: seven remained by 1998, five by 2019, worn down by two centuries of city growth rather than by axes. Thai folk belief holds that timber cut for shipbuilding carries its own protective spirit into the vessel, called Chao Mae Takian, so wood taken from here would once have gone to sea as more than lumber. In December 2021, Bangkok's environmental office joined a heritage-tree foundation, the Ministry of Defence and three professional associations to formally restore what remains, an unusually wide coalition for five trees behind a temple most visitors walk straight past on the way to something older-looking. They still stand exactly where Rama I put them, doing nothing more useful now than being two hundred years old.

Species
Thai Ironwood (Hopea odorata)
Location
Khlong Lot canal, Atsadang Road, behind Wat Ratchabophit, Phra Nakhon, Bangkok (Phra Nakhon, Rattanakosin Island)
Access
Free, public canal-side street, viewable at any time
Getting there
10 minute walk from MRT Sanam Chai (Blue Line), via Atsadang Road

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Sources

Where the facts on this page come from.

Trees nearby

The Bodhi Tree of Wat Phra Kaewplanted 1864, about 162 years · 570 m awayLan Pho, the Bodhi Tree of Thammasat Universityat least 90 years, exact planting date undocumented · 1.0 km awayThe Bodhi Tree of Wat Saketplanted 1818, about 208 years · 1.3 km away

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