Coffee grounds for slug control
I was just now checking out a video by the Michigan State U. extension service about floating row covers, and the narrator of the brief video said something which was a revelation to me.
He was talking about broccoli growing, but it will work fine with hosta as well. He said you could put coffee grounds, as long as it still contained some caffeine, around your plants, and the slugs would ingest it and it (the caffeine) would kill them.
KILL THEM. Not simply deter them.
Okay, so drink caffeinated coffee black no sugar, and when you do your morning walk through the hosta patch, dump the coffee cup on a hosta with a few bite marks on it. And, dump the grounds--I recommend making really strong coffee--around the soil surface. I bet even after the caffeine leaches out, the grounds will be icky to the slug and repel him. Plant saved, TADA!
How neat is that!! I bet anything with caffeine could work also. So tealeaves yeah. Which means camellia trimmings should be fine to grind up and spread as part of the mulch.
I bought a lot of the ammonia yesterday to mix for slug treatment (1:10 mix with water) but coffee grounds is worth a try too. Cheap at half the price.
Here is a link that might be useful: Floating row cover & caffeine slug abatement