When I purchased mine three years ago I was told they would not winter
in NJ. They are still alive ( a few fell victim to raccoons, but
that's another story) and as large as an apple. As long as there is
enough algae to feed on they don't bother the plants much. Of course
this year I really got my algae under control so I sacrifice some
watercress to save my lilies. If you have no algae try feeding lettuce
or they love orange slices ......... if they can get it away from the
koi.
You do know they are frowned upon in some southern states.
Check out this link.
http://doacs.state.fl.us/~pi/plantin...nailMainx.html

http://community.webshots.com/user/hankpage1

"Barry" wrote in message
ink.net...
I purchased an Apple Snail ($4.99). Put him or her in my 3' deep
pond.
Within 20 minutes he was at the top munching on these floating
lettuce
like plants I have. I knocked him down twice. Happily I found him on
the
bottom this morning munching on the bottom gunk.

Are these guys a danger for plants?