Rosemary is a long living, semi-woody perennial herb that can be pruned any way that you like, and become a bonsai in a single year. Moreover, it does not take much effort. It can reach a maximum of forty eight inches in three years. How charming to have such a great herb plant grown as an ornamental bonsai shrub!
Rosemary does not require pruning to grow, however some strong cutting back will improve the look and vitality of the plant. Pruning also allows light to reach branches and needles located closer to the ground.