Water Hyacinth (Eichhornia crassipes)

Common names:
Give a thumbs up Water Hyacinth
Give a thumbs up Common Water Hyacinth
Give a thumbs up Floating Water Hyacinth

General Plant Information (Edit)
Plant Habit: Herb/Forb
Life cycle: Perennial
Sun Requirements: Full Sun
Water Preferences: In Water
Minimum cold hardiness: Zone 9a -6.7 °C (20 °F) to -3.9 °C (25 °F)
Maximum recommended zone: Zone 11
Plant Height: 4-6 inches
Flowers: Showy
Flower Color: Purple
Suitable Locations: Bog gardening
Uses: Water gardens
Dynamic Accumulator: Nitrogen fixer
Containers: Suitable in 3 gallon or larger


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Posted by Horntoad (Nederland, Texas - Zone 9a) on Sep 22, 2011 1:46 PM

Prohibited in Texas and other states. Water Hyacinth "alters native vegetation and fish communities by lowering light penetration and dissolved oxygen levels. Impedes boat traffic on rivers and waterways and clogs irrigation canals and intake pumps."

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Posted by Newyorkrita (North Shore, Long Island, NY ) on Oct 7, 2011 3:43 PM

I know that Water Hyacinths are invasive in southern areas but must not be so up north as they are for sale at all the bigger local nurseries that have a pond section. I buy 1-3 plants each spring as they die over the winter. I put them in my in ground 350 gallon stocktank pond and by the end of the summer the entire pond surface is covered with water hyacinth plants. They rarely flower for me.

Rita on the north shore of Long Island, New York zone 6/7.

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Plant Events from our members
dragonfetti On December 15, 2014 Plant Ended (Removed, Died, Discarded, etc)
Did not make it through the cold weather. Will replace in spring.
dragonfetti On December 9, 2014 Entered Dormancy
May or may not live through the winter.
dragonfetti On August 4, 2014 Obtained plant
Purchased from Vivid Ponds, Hesperia, CA.
» Post your own event for this plant

Discussion Threads about this plant
Thread Title Last Reply Replies
Untitled by HarisKabir Sep 26, 2012 10:38 AM 0
Untitled by mw236 Jun 28, 2014 4:48 AM 1
Plant ID by dawiz1753 Jul 9, 2019 1:08 PM 6
Can Somebody Please Help Me ID this flower? Lake Apopka, FL by ADubin Apr 15, 2019 9:33 AM 5
Question about water gardening and etc by CanT Feb 14, 2018 5:59 PM 11
Need help identifying- PA by xIrisx Oct 13, 2017 7:33 AM 3

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