Between Easter and Mother’s Day across the state of Texas, you’ll find dewberries growing wild along fencelines, in ditches, and in sunny pastures. These low-growing, thorny vines produce berries similar to a blackberry, although they are an entirely different subspecies within the Rubus genus. Though they are smaller, they taste comparable.  As they grow, they change from green to red to dark purple. You’ll know when they’re ripe when they lose their shine and can barely hold their shape under the weight of your fingers— which will…