Blue flag spreads slowly compared to many other marginal pond plants. It spreads too slowly for most pond owners who like the flowers and height of the plants. IMO blue flag is many times better than cattails. At times when the pond is overflowing blue flag could be in 18" to very rarely 2ft of water. It can survive when on wet pond banks above the water line. Normally it likes living in water 0" to 10"- and up to 16" deep at high water level. .

Last edited by Bill Cody; 04/23/25 08:03 PM.
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