Ludwigia octovalvis
Mexican primrose-willow, a robust, pantropical wetland herb up to about a metre tall, with yellow four-petalled flowers. It grows in full sun in ditches, marshes and pond edges, and is easy and fast in wet, warm conditions; it can become weedy.
Where it grows wild
Wet ground in the open: marshes, ditches, rice fields and the muddy edges of ponds and rivers, rooting at the nodes and sometimes floating.
From sea level to about 2,700 m, mostly below 250 m.
🔒 Growing it like that
The wild conditions above, turned into targets for a shelf, a tent or a greenhouse. The full profile has:
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Profiles are drafts built from measured range and climate and from published sources; each section carries its own confidence in the app. Photo from Wikimedia Commons, used under its CC BY-SA 3.0 licence, unmodified.