This winter I am having kitties in the greenhouse. 6 of them. 3 of them probably woudn't make it through our winter in the barn..........1 old and 2 are only 4 months old. Between the 6 of them they have found the dirt in the pots a most wonderful place to do their business. Never mind I have a huge litterbox made out of the cut-out bottom of a 55 gallon drum, and another "regular" litter box.
My sister brought me some planters down with her impatiens in that she cut back. She just wanted to see if they would winter over, and I won't charge her (might get a free haircut out of it as she's my cosmo gal). The ones that had good regrowth before I put the cats up there they have left alone. The others...........hmmmm...........not so much. I put my overtaxed brain to work and I came up with little hoop houses made of chicken wire and put together with zip ties. For the large pots I used some small-holed woven-type wire we had laying around. I've got the clients' pots done, just need to do mine that they bother. Ran out of wire, and it galls me to have to buy something to do a cobble-up job. LOL
They don't look pretty, but, hey, cheap and effective. I may have to reapply the tape, but it's pretty strong stuff; it's used to patch holes in silo bags. We have quite a bit of that stuff laying around. I think Gorilla tape would be the best, tho.