Not me, I sprayed prodiamine last Sunday. We got some cool days ahead of us so it will probably be ok but I don't think it's worth the risk. You'll more than likely have to do a second app this spring anyway.

That's why I'm thinking I might wait a bit. Doesn't pre-emergent inhibit root growth? Two applications might stunt the turf before the infamous transition zone summer

Some of the TTTF I planted last fall probably isn't very deeply rooted... shouldn't I let the turf top growth reach about 3.5 inches tall or so so I can be sure that the roots are at least deeper than 2 inches (that is, so they are deeper than the pre-em barrier)

You can pull a small plug and inspect the roots. A lot of times grass that has very little top growth has surprisingly deep roots.

Pre-emergents are root clippers and will stunt root growth slightly, but it's not a show stopper. Getting invaded by weeds in the summer is much worse than the small impact pre-m has on roots.

If you want to boost root growth consider investing in a jug of trinexapac. Not only will it boost root development, it will increase tillering, reduce mowing by 50%, increase drought resistance and enhance color.

Soil temps here in South Central/Western VA have been around the 52-54F range since February. I went ahead and did the first mow and put down my fert and pre-M while I had the time on Saturday. More often than not, I am usually a week or two late because of other things in my schedule, so I took advantage. Even had a little light rain Tuesday evening to soak it in.

I applied Prodiamine yesterday. I used 2 teaspoons in a gallon of water over 1000 square feet (I have markers for each 1000 square foot section). That is a low dose. However, I would rather risk lack of pre-emergent coverage in August than risk having it linger into September. If the summer is brutal, like it often is, I want to be able to overseed early in September so the grass has the most time to establish well in the fall.

@beckyinrichmond

I used the 0.4oz/k rate last year(5 months) and it worked out very well. It was mostly gone by August (you could see more weeds pop up) and it didn't interfere with seeding early September. Just FYI in case you need a confidence boost :-)

No snow this weekend; Dimension down.

You have to do another round in May right?