On Sun, 6 Feb 2005 16:13:52 -0500, "Bill Stock"
wrote:
Wishful thinking I know.
But when can the Water Hyacinths go back in the pond, May 24th? They're
about to take over the house. 
Water hyacinth can tolerate a frost on the leaves, but they will look
UUgly until they grow back out (new leaves) after the water warms up.
They grow better in water over 70*F.
Try adding a few to the pond when your water temperature gets above
40*F and protect them from a hard freeze. They will get smaller, but
mine usually show small slow growth as the water warms.
Regards,
Hal Zone 8