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Common Name: Bladderwort
Utricularia vulgaris is a
Europe, including Britain, from Norway south and east to N. Africa, temperate Asia.
Ponds, lakes and ditches, usually in relatively deep water[
A free-floating water plant[
], it requires acid conditions[
] and is most commonly found in deep water[
This species can become a noxious weed in rice paddies[
An insectivores plant[
]. The plant possesses bladders with trap doors. Most of the water is pumped out of the bladder, resulting in a lower pressure inside the bladder than outside. When a tiny (usually microscopic) creature touches one of the trigger hairs on the door, the door opens allowing water to rush in and carry the animal with it - the process taking just a small fraction of a second. The trap door closes and the animal is digested by the plant[
An aggregate species[
Seed - we have no information for this species but suggest sowing the seed as soon as it is ripe on the surface of a pot of acid compost that is immersed in water.
Division should be possible in the growing season[