Nymhaea “Mexicana“ Hardy from zone 4-11. Plant Size: Medium. Its own species native to North America, flower bright yellow, 4“- 7“ across. Has a 4'- 6' spread. Leaves are green. Will grow in 6“ to 3' of water. Best to grow in 1.5' of water. You can use a 2 or 3 gallon container for this one. Dr. Strawn secret in his creations is this lily. The flower holds itself well above the waters surface. Watch out though this lily will take over an earthen pond pretty quick and once in your pond it's almost impossible to get rid of. I would only use it in a lined pond and make sure to have it in a large no-hole container. Full sun