Northern & Central Midwest
If you must divide your peonies, now is the time to do it. Dug up the whole plant, divide it into equal sectons, and replant in a sunny spot with soil amended with compost. Plant the eyes only between 1 and 2 inches below the soil. Keep well watered.
Begin digging potatoes when the tops die down. So can leave them i nthe ground for awhile after the tops have died, but they are prone to rotting and animal damage. Store potatoes in the garage or basement this fall and in a dark room between 38oF and 40oF for winter. Eat any damaged tubers immediately.
Treat Lawn for Grubs
White grubs are the larval stage of many adult beetles such as Japanese beetles. The grubs feed on grass roots and damage in the lawn may show up as dead areas of grass or damaged grass from skunk grubbing. Cut out 1-foot square section of sod. If you see more than 10 to 12 grubs, treat with beneficial nematodes that will parasitize the grubs without harming other insects, animals or humans.
Plant Fall Gardens
It's time to plan for a fall garden. During the first 2 weeks of August, plant broccoli, cabbage, cauliflower, and Chinese cabbage plants for fall harvest. Plant seeds for carrots, leaf lettuce, mustard greens, spinach, and all other types of greens, and don't forget radishes. Keep well watered especially during hot, dry weather.
Garden centers are ready to put away their plant supplies, and throw out leftover plants. Now is a good time to stock up on seed starting supplies and pick up bargain plants. Choose plants carefully, because some may have been neglected all summer and will be in poor shape.