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The color of the vine also indicates when to harvest Concord grapes. Throughout the growing season, the vine and stems are a light to medium green. When the vine and stems begin to turn to a light then medium brown, it means the grapes are ripening and ready to harvest.
Dear Don, Pears ripen from the inside out, so you canât judge their ripeness by looking at the skin. To test if a pear is ripe, apply gentle pressure near the stem end. If it gives slightly, itâs most likely ready to be eaten. Pears are one of the few fruits that donât ripen successfully on the tree.