I planted about 4,000 sf with a dry ,short-prairie seed mix last fall. Much to my surprise, the plants have grown quite quickly, with many blooming! i have been pulling things like foxtail, and lambsquarter, velevetleaf, etc. I think I have most of the taller weeds under control. Is it still a good idea to mow it? Down low, I have quite a bit of crabgrass. What should I do about it? Not worry about it? Pull it?