Eastern Europe, Western Asia
North America, Mexico, Central America
Common Cattail, Southern Cattail, Dwarf Bulrush
Summer Squash, Winter Squash
Lake margins, Ponds, Swamps
Cold Regions, Subtropical climates
21,22
A1, A2, A3, H1, H2, 1a, 1b, 2a, 2b, 3a, 3b, 4, 5, 6, 7, 8, 9, 10, 11, 12, 13, 14, 15, 16, 17, 18, 19, 20, 21, 22, 23, 24