Leave the grape clusters on the vine if the fruit are not sweet. When harvesting grapes, remove clusters with a knife or hand shears. Grapes can be stored in the refrigerator for up to two months. Raspberries are ripe when the fruit are fully colored. Ripe berries easily come off the receptacle that remains on the plant.
Raspberries are very perishable.
They should be harvested every 2 or 3 days, handled carefully, and immediately refrigerated or frozen. Raspberries can be stored in the refrigerator for only 3 to 5 days. Strawberries are fully ripe when uniformly red. Pick the berries with the cap and stem attached to retain firmness and quality. Don't pull them off.