Posted: 03/05/2013 at 11:26
There are things you can do. Start early on St Valentine's Day (because it's easy to remember) or as soon as any snwo clears and scatter wildlife friendly slug pellets thinly over your borders. These will get the first slugs to emerge from hibernation and also any new hatchllings. Repeat the scatterings every two weeks or after heavy rain to get the next lot and stop them all breeding and feeding.
Once plants like hostas and dahlias emerge, use a garlic spray to deter slugs and keep up the regular scatterings of pellets. This advice comes from a hosta nursery owner so should be good.
Garlic spray for hostas and other susceptible plants and seedlings
2 Bulbs Garlic
2 Pints Water
Crush 2 bulbs of garlic
Steam or boil in 2 pints of water for 3 to 4 minutes until blanched
Strain mixture and make back up to 2 pints
Leave to cool
When ready to use, mix one tablespoon into a gallon (3.8 litres) of water. Sprinkle on to leaves in late afternoon (in dry weather). Reapply every two weeks.