We made two applications of Lesco's Pre-M granular this spring. Once in February and another in April. Due to the rain, we are experiencing problems with crabgrass, nutsedge, and are now starting to see broadleaf emerge.
Our solution has been to apply the Dimension product (0-0-8) in order to help prevent infestations during the next two months. The product shows a barrier protection of 120 days, so we will be seeding the lawns which have had the problems in the mid-October timeframe.
As for crabgrass, Drive 75 is our solution. Mixed with 3 way and a tackifier, it is covering a wide sprectrum of weeds. If the customer cannot stand the nutsedge, then we apply Manage with tackifier to eradicate the nutsedge the best we can.
Note: we had experimented with Quiksilver, which is supposed to act as a accelerator for 3 way. It spotted/burned the areas we sprayed. We have also had a huge brown patch problem back in late June/early July.