The product has pendimethalin not Dimension as it's pre emergent element. Zoysia being a warm season grass is not doing much of anything at this current soil temp. So any N, P, or K would not be very productive. As far as weed pressure goes winter annual are in season. Clover is a perennial weed and can be controlled with a 2,4,D product. Think of pre emergent as a window of coverage. Use flowering shrubs to indicate soil temp in your area. Forsythia is the best example to indicate when to pre emerge your turf. When it blooms you can bet the soil temp is high enough for weed germination. Dimension will give you 6 to 8 months of coverage compair to 6 to 8 weeks from Pendi. When you put the pre emerge down the clock starts ticking.

Best - great memory! That is yet to be seen, as those problem spots browned faster in the hot summer sun - so far so good though. Vicki - I did reseed with compost the year I started, which filled in a lot of the bare/crabgrass spots I inherited from the previous owner. The best weed prevention is more grass! Having said that, the key to CGM is 1) timing & 2) lay it on heavy. I'm sure someone can chime in with more precise temperatures, but I believe most (weed) seeds germinate when the soil temps hit around 65F. Since CGM (I use Blue Seal brand) seems to resist being washed away better than the more soluble synthetics I've tried, I put it down as soon as the air temp hits 60F. Last year, it was Feb! This year I put it down in April, right before that big rain storm we had (since you appear to be local). And by lay it on thick, I use 30-40 pounds per 1000 sq. feet. Due to the way organic fertilizers like CGM works, you can't over-fertilize (unless of course you totally bury your lawn with it!). I know it was the CGM (plus fairly thick, tall grass) that kept the dandelions out because I put very little on my lawn. I do CGM at 30-40 lbs / 1000 sq feet in the early spring when the air temp hits 60F and then I'll put soybean meal (also fairly high in protein) down in the fall sometime. Other than that, I mow high and water deep -that's it! Good luck and thanks for the kind words.

IF you are going to use a chemical "weed and feed", better carefully read the label as the product will kill a lot more than weeds. Also, contrary to popular belief, St. Augustine needs 5 or 6 hours a day of sun shine. Now, before Lou starts in about shade tolerant varieties of St. Augustine, yes, there are some new strains, they are expensive and it involves resodding your lawn. To reiterate about CGM, an application of less than 20 lbs. per 1,000 sq.ft. has limited effectiveness, and a heavy rain immediately after application will render the weed killing effect nill. If your desire is to use a natural approach, you need to understand how products work and what to expect of them. Most of the grassy weeds will die out in the heat. Others will be crowded out as the grass regains its vigor as it comes out of dormancy. The best way to control a lot of weeds is with a healthy lawn. Further, I have been praticing organics for 50 years and my present property for 35 years. Don't expect a property to turn around in 1 or 2 years as it will take that long at least to get the toxics out of your lawn and garden.

You don't have crabgrass. Crabgrass will not appear until at least April. You might try taking some pictures of the weeds you have and posting here. If you can take them on a cloudy day, that's best. Also don't be afraid of getting up close to the grass/weeds. 6 inches is good. 6 feet is terrible. Also, where do you live? It's likely too late for preemergent unless you live in the north. The first app of preem in my area would have been in January this year (unusually warm and rainy). You might still stop the crabgrass in your area, though, so I'm not saying to skip it entirely. You're just too late to catch the weeds already sprouted. As for clover, look for Weed-b-Gon Chickweed, Clover, and Oxalis Killer. This is not the ordinary wbg. It's WBG CCOK. Before you bring it home, read the label to make sure it works on your lawn. I had a lot of thistle when I moved to this house (Bandera Texas) in 2014. I was able to wipe it out with a sharp shovel. I put the shovel in so it cuts off the tap root an inch below ground. That's all. Slice it off and it does not regrow. You don't have to dig out the roots, just cut them below ground level.