Q. Can I use sand to protect my hostas from slug damage?
Hostas are particularly vulnerable to slugs and snals. they can devour a good-sized piece of foliage, leaving larg raggedholes. slugs find wounded plants especially delicious.They begin feeding at the bottom of a plant and work their way up. they are snails without shells.the best way to control slugs and snails is to trap them with either homemade or commercial traps. simply take a pie plate or some other shallow container and fill it with beer. True totheir rowdy nature, they'll dive right in and drown. Okay a bit much, but it works. If slugs frequent our garden eary year, try to catch them early. set out a few traps three to four weeks after the last frost. As soon as you catch the first slug, increase the number of traps to catch others before they get out of hand. Two cultivars of hosta 'Invincible' and 'Sum and Substance', are reported to be resistant to slug attack. Although i know there are so many cultivars out there.
Not promoting any product, but here are more ways to control the problem slug: http://www.rodalesorganiclife.com/garden/do-these-6-things-wipe-out-snails-slugs
Hope this helps.
Courtesy of the NYBG Plant Information Service