![]() Aristolochia durior |
After transplanting to its permanent position the plant will need two years to settle and begin vigorous growth. During this period it should be pruned to promote spreading. In following years it only requires occasional pruning when it has spread out too much. In such case you can cut it back hard as it grows back readily. Aristolochia quickly produces a dense mass of greenery, so it needs a solid support. It may be trained into old trees, living or withered, to create bewitching crowns by entwining round the branches and the trunk. Large leaves overlap forming a green screen so thick as almost no other plant, tightly covering fences, pergolas or arbors and giving deep shade. Dutchman's Pipe stays ornamental through winter adorning the garden with its attractive leafless green stems.
As a vigorous climber, Aristolochia requires annual feeding and intensive watering, especially during hot summers.