Blackberries and raspberries are part of the rose family. Just like roses have bushes and climbers, blackberries have erect and non-erect varieties, also known as standing canes and trailing canes.
Standing canes are thin branches that grow directly from the plant's shallow roots. Blackberry canes grow one year and bear fruit the next. This type of cane will grow upright, then arch back toward the ground, especially when heavy with fruit. Standing canes are hardier than trailing canes and can withstand colder weather.
Trailing canes lack the strength to stand upright. Like their cousins, climbing roses, these blackberries need a trellis to grow properly in a garden. Their lighter constitution make them more difficult to grow in colder climates, but not impossible. Trailing canes need special protection from the cold. Covering trailing canes with plastic or mulch may protect them.
Blackberries are susceptible to virus and blight. Be careful when taking a cutting or young plant from a neighbor or from the wild. Instead, rely on a reputable dealer.