Check with your local County Extension Agent or professional nurseryman for the proper products to use under your conditions. Now that it is too late for these herbicides, mechanical control, mowing and weed removal, or use of post-emergence herbicides are your best options. If you choose the herbicides, be certain to use one which will affect the weeds you wish to kill without harming the desirable vegetation. Some weeds may be controlled by mowing, but others must be removed. The key is to prevent them from forming seeds if they are annuals.
Perennial weeds present their own special problems.
Consult with your County Extension Office or Garden Center experts to identify the weeds and determine your best options. Remember to plan ahead to next year to control the annual weeds which can return again only from seeds.