The Temperate Database is in the process of being updated, with new records being added and old ones being checked and brought up to date where necessary. This record has not yet been checked and updated.
Common Name: Gibbous Duckweek
Lemna gibba is a perennial plant that can grow up to 0.15 metres tall.
It has uses.
Temperate areas in Europe, including Britain, to the Himalayas, Africa, S. and N. America.
Still waters in Britain[
]. Eutrophic, quiet waters in temperate regions with mild winters[
Requires a sunny position in still water that is rich in nitrates and lime[
Duckweed can be a troublesome pond weed though it is easily controlled by simply scooping it out[
]. This scooped out material makes an excellent addition to the compost heap. The growing plant is a good food source for fish and birds, as well as providing cover for creatures in the pond[
Although it is towards the limit of its climatic range in Britain, it often flowers here if growing in a sheltered sunny position[
]. It over-winters in temperate areas by means of resting buds which sink to the bottom of the pond in the late autumn and rise again in the spring[
Seed - we have no information on this species but, since it spreads so rapidly by division, it really needs no extra help once it is in a pond.