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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.
How can I tell if a peach is ripe? All of the fruit on a tree does not ripen at the same time. Usually, fruits on the outside and top of a tree will ripen 5 to 10 days before the fruits in the middle and inside part of the tree. Also, different varieties of peaches ripen at different times.