Raspberry, blackberry, elderberry and red currant are shrubs occupying a small space but their harvest is a real treat. A berry plant such as raspberry and blackberry is perennial. However, while their roots remain and extend in the soil, their stems live only 2 years. The first year a stem comes out of the ground, it will simply grow without giving a fruit. The second year, the stem will give fruit and then die. Only this stem dies. While this stem was busy giving fruit, the roots have been shooting multiple new stems that will be giving berries next year, and so on! This is how a berry plant lives. To get a full row of stems within 2 or 3 years, plant your raspberry and black berry every half a meter (2 feet) in a straight line.