I have heard of problem with mice with the hay mulch which then leads to a problem with snakes and then with a problem of who digs the potatoes.
EastTexFrank, do you use it over root crops and if so have you harvested any? Just wondering if the hay harbored insects?
I have used the black plastic and it works very well even in the hot South. Just use a pitch fork to poke holes in it before unfolding so water can soak through. The heat it generates seems to help control insects for me. Be sure to take it up before tilling (Experience).
I've not noticed any obvious problem with mice but I had a few low growing tomatoes that had been nibbled on the bottom so it could be. They're going to be around anyway, I see them all the time when mowing the pasture. Haven't seen any snakes but I'm usually prepared for them. As to who does the picking and digging .... no problem there, that's me.
The potatoes did great under the hay. I put some down between rows of onions, carrots, beets and rutabagas and it kept the weeding to a minimum. We've been living off the garden for months so things have been producing pretty well but most of the cooler weather crops are finished. As I pick, dig or clear stuff out I usually throw down some more hay to cover the bare spots.
I live in Texas and bugs are a problem no matter what, although, it was certainly no worse that usual. If anything it was a little better. I have sprayed insecticide (once) and broadcast granules (once), mainly to keep ants under control but again, no worse that normal.
All in all, I'm very pleased with the results but this is only the first year so we'll reserve judgment for a little while.
I tried the black plastic and landscape cloth for a few years and on the whole it worked pretty well. I still had to cover it with mulch of some sort, usually pine bark or cedar so using the hay just cuts out one more step. The other thing with black plastic, it was difficult to judge just how much water the soil was actually getting. With the hay, you just pull it back, grab a handful of dirt and give it a squeeze, throw it back down and cover it up again.
As you can probably tell, I've been on a 25 year quest for the minimum work, maximum benefit garden and, darn it, I think I'm getting close. I just hope I live another 25 years so I can finish the project.
