Plant or transplant rhododendrons and iris. Plant garden cover crops as garden is harvested. Spread manure or compost over unplanted garden areas. Spray holly for leaf and twig blight, blueberries for stem canker. Begin hardening off trees, shrubs, and vines for winter by reducing watering.
Plant daffodils, tulips, and crocus for spring bloom.
Work calcium and phosphorus into the soil below the bulbs. Use stakes to support tall flowers and to keep them from blowing over in high winds. Bait for slugs. Check corn for earworm and spray new silks with appropriate pesticides. Dig, clean, and store tuberous begonias if frost threatens.