Harvest onions after the tops yellow and fall, then cure them in a warm, dry, well-ventilated area. The necks should be free of moisture when fully cured in about a week’s time.
Harvest potatoes after the tops yellow and die. Potatoes also need to be cured before storage.
Pick beans, tomatoes, peppers and squash often to encourage further production.
Harvest watermelon when several factors indicate ripeness - the underside ground spot turns from whitish to creamy yellow; the tendril closest to the melon turns brown and shrivels; the rind loses its gloss and appears dull; and the melon produces a dull thud, rather than a ringing sound when thumped.
Harvest sweet corn when kernels are plump and ooze a milky juice when punctured with your fingernail. If the liquid is watery, you’re too early; if the kernels are doughy, you’re too late.
Keep faded flowers pinched off bedding plants to promote further flowering and improve plant appearance.
Spade or till soil for fall bulb planting, and add a moderate amount of fertilizer.