Wild blackberry season in the Pacific Northwest means blackberry bushes loaded with ripe berries everywhere in August and early September! In fact, these plants are a nuisance for most homeowners since they are invasive and difficult to get rid of. If you don't have blackberries, you can substitute other fruits in equal amounts. For example, try replacing the blackberries with blueberries, and the apricots with two large peaches. If a large pan of cobbler is too much for you then you can cut this recipe in half and bake it in an 8x8-inch square glass pan.