Your situation sounds familiar. I’m in North Alabama, so let’s compare:
Around here it’s fairly hot, my yard had a lot of shade, I had a lot of bare dirt, the yard has red clay soil, I have a dog who runs around the yard, and a fair amount of foot traffic.
I spent YEARS trying to grow grass from seed. Spring planting, fall planting, it never survived. Also, EVERY time I put seed down, within days there would be torrential thunderstorms. Not even straw helped. And how to keep the dog off the new grass?
I’ll tell you that the easiest and best solution, though not the cheapest, is sod.
No matter what you do, you’ll need to prune some branches to increase sunlight. I love my wooded lot, but I quickly realized that I wasn’t getting enough sun for even weeds to grow to keep the dirt in place, let alone shade-tolerant fescue. I had to give in and take out 3 trees. Pines are especially bad for grass (they lower pH, and have a lot of near-surface roots that suck up water). If you have clay soil in the South, you just might have pines.
I also pruned all the lower branches on the existing trees to get as much sunlight as possible. No grass is going to grow, certainly not seed, without an adequate amount of sun (at least a few hours a day). If you have trees, about the only grass I know of that will do reasonably well is fescue, and it’s too late to seed now. Anything else like bermuda or zoysia needs a lot of sun. So you have a toss-up: do you get enough sun for something like bermuda or zoysia, or can you keep fescue watered in the summer? I already had fescue on one side of my house, and it does fine down here.
It would also help if you have a sprinkler system, or a yard small enough that you can leave portable sprinklers hooked up. You can get a battery-operated timer for your hose faucet for around $30. Seed or sod, you need to keep it wet until it’s established.
Like I said, I was tired of wasting…lets’ see…about $1500 in the past 8 years on seed that never developed into a lawn. I just spent $1050 on 6300 sq. ft (14 pallets) of sod. Put it down last weekend (I have never been so dirty, or so sore, in my life), but I have a nice THICK green lawn. I’ve had to keep my dog from running around the yard until the roots establish, but they’re already anchoring to the soil. I’m definitely happy with the decision.
If you want to seed because money’s tight, wait until the fall and try fescue, or check with your county co-op or farm extension and see what they recommend. A tiller will help, and test your soil’s pH and amend as necessary. If you want to sod, do it quick, because they’ll probably stop cutting fescue soon. No matter what you do, seed or sod, if it’s fescue you’ll need to overseed every fall, but that’s easy on an established lawn.
If the dogs have established paths, you should also consder making them permanent. Maybe use landscape timbers, or something else, for borders, and just leave it dirt, or put mulch down. Try adding flower beds instead of grass. It’ll cut down on your mowing too! Shade-loving plants like hostas and impatiens will do well.
Me? I’d go with the sod, even if you do a little at a time. Trust me. 