Rye grass will dye out as soon as the weather warms. You do no need to stop watering for this to happen. The bermuda, needs water. I have never had St Augustine so I can't speak to that but with the wear & tear that Great Danes give your grass, I'm quite certain it needs ample water too.

I watch the Big Box stores. When the seed and topping is stacked to the rafters, it's time to seed.

Is there any way you can cordon off a section on the yard for dog use only? At least while the Rye has a chance to sprout?

BTW. I have never watered mine 5-6 times per day. Maybe 3 times but usually twice.

Oh, I guess I wasn't clear. I want to plant early so I can walk the dogs 3X a day in the park before the baby comes. There is NO way I would try to germinate grass with them even walking on it (BIG muddy paws!)

The little nurseries have rye, but I will check the big box too. Even if the day is around 100 you think I can water 2-3 times per day?

Thanks! Dale

You can start the overseed in a week or two. A little soon but ok. You must keep it moist. When I do it early i will water 9 times a day for 1 min each. You can do 5-6 at 2-3 mins and be fine. The bermuda did not come back i would guess do to all the shade from the tree.