I've actually seem them in at least 5 feet of water and sticking out another three feet or more. Don't underestimate these plants. They could make it on the moon. \:D

I had an isoltated row in about 5 feet of water that I ended up spraying and then cutting off. They never came back. Downside was it was a big bluegill magnet.

If pigs could fly bacon would be harder to come by and there would be a lot of damaged trees.