Perennials: Plan bulb planting and order early for the best choice. Divide day lilies after bloom. Cut back perennials that have bloomed, but save some foliage. Divide and transplant perennials when the weather cools. Continue monitoring and treating black spot and mildew on roses.
Flowers: Continue weeding flower beds before weeds set seed. There will be fewer weeds next year. Tuck in colorful chrysanthemums where perennials have been cut back and left bare spots. Thin the side shoots of dahlias and disbud for larger flowers. Take a look at the new varieties of echinacea: pink doubles, yellow, white etc. Short and tall.
Vegetables and fruits: Holes in vegetable plant leaves indicate slugs at work during the night. To catch them sink tuna or catfood cans so rims are at ground level and fill with beer, or apply commercial bait. Pick off tomato hornworms. Keep potato tubers and carrot necks covered with soil or mulch to prevent the development of an undesirable green color. Pick corn at its peak — when the kernels are full, the tassels silky and the husks green.
Trees and shrubs: Order shrubs and roses for fall planting. In general, pruning should follow bloom immediately. For most flowering shrubs it is too late for pruning unless next year’s blooms can be sacrificed for a better shaped shrub. Lacebug can still be a problem on andromeda and azalea. Examine the underside of the leaves for evidence. Spray the undersides of the leaves with a recommended spray or use a soil drench as a systemic treatment.
Lawns: Consult Cornell Cooperative Extension for the best variety of lawn seed for your conditions.
Houseplants: Start cuttings of geraniums, begonias, coleus and impatiens. All make nice winter houseplants. Allow geranium cuttings to dry overnight before putting them in a glass of water in bright light until roots form in about 10 days.
General: Where yellow jackets are a problem, keep eating areas clean. Wear light-colored clothing when working around areas where they are present. In spite of being pests they also serve a beneficial purpose. When they are not attracted by our food they collect insects to feed their young.