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Ludwigia grandiflora
Also called Largeflower primrose-willow, Uruguayan Hampshire-purslane, Water primrose
Large-flower primrose-willow is a semi-aquatic subshrub that grows in shallow water, wet margins and marshes, and is often grown in ponds and water gardens. It is invasive in many warm regions, so keep it contained.
Ludwigia grandiflora, the water primrose, is an aquatic plant of the order Myrtales.
It is closely related and easily confused with Ludwigia hexapetala. The two species can be distinguished at a chromosomal level, because L. grandiflora is hexaploid and L. hexapetala is decaploid. However, they can be distinguished morphologically. L. grandiflora has villous hairs, smaller flowers and smaller pollen grains. Some authorities consider that these differences are too slight to consider these different species and so separate these taxa as two varieties or two subspecies.
Water Primrose · Water Primrose · Seedbox · Ludwigia inclinata · Marsh seedbox · Peruvian primrose-willow · Hairy primrose-willow · Creeping primrose-willow
Text excerpted from the Wikipedia article Ludwigia grandiflora by its contributors, under CC BY-SA 4.0; the excerpts and the care summary drawn from them are shared under the same licence.
The care summary was written by AI (Claude, Anthropic) from the sources on this page, with general growing knowledge where they are silent. Check before relying on it.
Life form, climate and native range: World Checklist of Vascular Plants, Royal Botanic Gardens, Kew (CC BY 3.0), reformatted; see Plants of the World Online.
