Common Water Hyacinth Pontederia crassipes MartiusNon-native  -  Invasive    Synonyms: Eichhornia crassipes, Oshuna crassipes.
Kingdom Plantae   >   Division Tracheophyta   >   Class Magnoliopsida   >   Order Liliales   >   Family Pontederiaceae   >   Genus Pontederia   


Common Water Hyacinth is an invasive species in Maryland (MISC 2022). It has been found over-wintering in several localities in Maryland. This plant has the potential to become a nuisance under certain conditions. Common Water Hyacinth is often grown in water gardens and has been repeatedly introduced into wild habitats.

There are 19 records in the project database.

View at Maryland Plant Atlas

Search Flora of North America

Search Mid-Atlantic Herbaria Consortium

Search Norton-Brown Herbarium

View taxon at iNaturalist

View taxon at NatureServe

Search Google Images

Search MBP Facebook posts (beta | requires login)

[View seasonality details]
Common Water Hyacinth blooming in Calvert Co., Maryland (10/24/2013). Photo by Jim Stasz. (MBP list)

Common Water Hyacinth in Garrett Co., Maryland (Date obscured). (c) Kyle Klotz, all rights reserved. Photo by Kyle Klotz. (MBP list)

Common Water Hyacinth in Howard Co., Maryland (8/19/2011). Photo by Sue Muller. (MBP list)

Common Water Hyacinth in Worcester Co., Maryland (9/24/2021). (c) tomfeild, some rights reserved (CC BY-NC). Photo by Tom Feild. (MBP list)

Common Water Hyacinth in Harford Co., Maryland (8/30/2017). Photo by Josh Emm. (MBP list)

View All Images

Use of images featured on Maryland Biodiversity Project is only permitted with express permission of the photographer.

MBP marks as "Invasive" any taxon listed in the Maryland Invasive Species Council (MISC) list of Invasive Species of Concern in Maryland. You can read their criteria and review the lists here: