Mine does the carrying, building and moving of heavy objects such as bags of mulch and every 10 days or so he takes the string trimmer to 'mow' the grass in the H*** strip (that's the only lawn left), It's not a matter of not allowing him to do anything in the garden, he just has absolutely no interest in working out in it and that's safer for plants, him and the marriage. He does a lot of bragging about what my gardens and shows off photos though
My husband is a keeper, but I don't let him pull weeds as he really can't tell the difference. But he can dig trees really well, and he can build just about anything. I'd rather he did those things anyway, and I'll take care of the weeds!