Blackberry fruit plant (Rubus allegheniensis)

The BlackBerry Fruit plants have biennial canes (stems) that are characteristically covered with prickles and are erect, semi-erect, or trailing; the thornless blackberry is a modern development. The leaves usually feature three or five oval, coarsely toothed, stalked leaflets, many of which persist through the winter. Borne on terminal clusters, the flowers are white, pink, or red and produce black or red-purple fruits .