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Hardiness Zone Finder

Pond Plants Hardiness Zone Map If this is not functioning you can visit Arborday.org

Most pond plants do not go by Zone appropriateness, this is because underwater even in ice they never reach the temperatures experienced that terrestrial plants outside a pond in the dirt do. Waterlilies in Zone 4 and Zone 7 both only get down to maybe 32-34 degrees as they are under ice in the water. They never experience zone temperatures. Even higher marginals in ice stay more mild. For this reason most pond plants are considered either Hardy or Tropical (annual) Hardy plants come back, Annual or tropical plants cannot be near freezing. Mosaic plants , water lettuce, Tropical (Annual) waterlilies and other cool tolerant tropicals cannot dio below 45 degrees.