It seems to have worked. The elephant ears a few feet away from the
pond are completely trashed, while the ones under the sprinklers look
OK. It got down to 28 last night, but it was still 33 by about 11pm,
when I went to bed. The sun rises about 7am now, and it was already
up into the forties by the time I made it outside. No ice anywhere,
but the ground where the overflow for the pond is didn't seem nearly
as wet as I had expected it to be.

On Wed, 19 Nov 2008 07:45:48 EST, Galen Hekhuis
wrote:

It freezes now and again at night here in northern Florida, and the
weatherguessers have guessed that tonight is going to be one of those
nights. I've brought plants inside and all, but I can't bring the
pond inside. I have sprinklers all around the pond, so I've turned
those on in an attempt to save the plants around the pond. I figure
I'll either wake up to a bunch of happy plants or an incredible ice
sculpture. Of course, it could also be just a bunch of dead plants
and puddles of water, but that isn't very exciting to contemplate. By
the way, the lily will have its eleventh bloom, if it survives.