Hal from Newburgh, Ny writes
In the northeast on bluegrass and poa
We would not recommend mixing a combination product like 4-Speed XT with additional herbicides, especially in the summer when your cool-season grass is under a lot of stress in the heat. Keep in mind that Lontrel is not for use on residential lawns. Neither ProSedge, nor 4-Speed, nor Lontrel will targe poa annua. Most poa annua really should be dead or dying by now due to the summer heat. You can use a pre-emergent for it in late summer/early fall such as Pendulum 2G.
Answer last updated on: 08/06/2019
