Water Lettuce (Pistia stratiotes)

Common names:
Give a thumbs up Water Lettuce
Give a thumbs up Shellflower
Give a thumbs up Water Cabbage
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General Plant Information (Edit)
Plant Habit: Herb/Forb
Life cycle: Perennial
Sun Requirements: Full Sun to Partial Shade
Water Preferences: In Water
Minimum cold hardiness: Zone 8a -12.2 °C (10 °F) to -9.4 °C (15 °F)
Maximum recommended zone: Zone 11
Plant Height: 4 inches
Plant Spread: 6 x10 inches
Leaves: Evergreen
Other: light green, no stem, thick, soft leaves have parallel veins, wavy margins, and form a rosette
Fruit: Other: green berry
Fruiting Time: Late summer or early fall
Flowers: Inconspicuous
Flower Color: White
Bloom Size: Under 1"
Flower Time: Summer
Uses: Water gardens
Will Naturalize
Suitable as Annual
Propagation: Seeds: Provide light
Needs specific temperature: above 20° C.
Sow in situ
Other info: seeds can overwinter in adjacent zones; seed dispersal is in water
Propagation: Other methods: Stolons and runners
Pollinators: Wind
Miscellaneous: Monoecious
Dioecious
Conservation status: Least Concern (LC)

Conservation status:
Conservation status: Least Concern
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Rocks and a HeadRocks and a Head
May 31, 2013

When my wife and I inherited her mother's gardens, we were determined to put our own imprint on them, but just as determined to preserve their historic elements. That included the beds bordered with rocks my mother-in-law had gathered from various areas of the U.S. while on family vacations. I'd been wanting to expand on the rock theme but couldn't quite decide how. Then I came upon the perfect solution. I found a head.

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Comments:
Posted by dyzzypyxxy (Sarasota, Fl) on Aug 28, 2014 12:44 PM

A Class 1 Invasive pest plant in Florida, this floating aquatic plant is a weed worldwide in temperate climates and can completely choke lakes and waterways in favorable situations. It spreads by seeds, and also by the divisions sometimes caused by boats and other watercraft cutting the plants up. They can then float downstream and infest the waterway further.

It is not winter hardy, so it is not invasive farther north where temperatures in the water get cold enough to kill it off. People therefore unknowingly may transplant water lettuce to a new waterway or water garden when they move south. It is, unfortunately, a very attractive plant.

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Discussion Threads about this plant
Thread Title Last Reply Replies
Aroid of the Day: Pistia stratiotes by Gina1960 Oct 11, 2019 9:43 AM 5
Cyrtosperma by tropicbreeze Nov 29, 2011 6:51 AM 22

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