Prune and divide Shastas and other clumping perennials now. It s also time to rake leaves. Mulched or unmulched leaves make great weed control around the base of trees, not over 4-6 inches deep. Or if you re organically minded, sprinkle with soapy water monthly. Use soap, not detergent.
Ivory liquid is fine.
Diatomaceace earth also is effective, though not as easy to find. Start your seeds now for earliest bloom in Spring. Your local garden centers have a much better selection of seeds than plants, particularly annuals. Mail order seed companies have an even better selection. Return to this site often as we will update bi-weekly, or Sign up to be notified as each new issue is posted.