I have a question about slit-seeding lawns in the spring. I've never done it before in the spring, only in the fall, but I have a few customers that want it done this spring. I'm concerned with mowing it after the seeding as I mow weekly for these customers as well. How long must I wait to mow before it is safe? I'm doing the seeding next week, grass is just starting to green up and grow here, I'm using a mostly perennial rye mix so it should come up pretty quick but I foresee running into some problems as the existing grass will need to be cut before the new grass is ready for that????? Any ideas/advice? Thanks.