As the growing season is ending in Michigan, I am still experiencing quite a bit of weed growth in my yard. This is in addition to the quackgrass. I will apply a preemergent next spring to take care of the quackgrass as I understand it is an annual. My question is this: Should I apply a weed killer to address the other weeds now, or will the preemergent take care of those also? Are dandelions annuals?