water chestnut

Trapa natans

water chestnut

Family: Lythraceae

Other Common Names: bull nut
Weed class: noClass
Native to: parts of Europe, Asia, and Africa
Legal listings:

This plant is on the quarantine list. It is prohibited to transport, buy, sell, offer for sale, or distribute plants or plant parts of quarantined species into or within the state of Washington or to sell, offer for sale, or distribute seed packets of seed, flower seed blends, or wildflower mixes of quarantined species into or within the state of Washington. Please see WAC 16-752 for more information. WSDA quarantine list (prohibited plant list) information.


Why Is It a Noxious Weed?

Water chestnut is not listed as a noxious weed but is on the quarantine list. 

How would I identify it?

Additional Photos