Aristolochia macrophylla is also known as the pipe flower or German pipe. This Aristolochia is known for its heart-shaped leaves that can reach a diameter of 25 cm. Eventually, the Pipe Flower can reach a height of up to 8 metres. The Hardy and very large-leaved climber is suitable for any location where the sunniest spots require more water than the shaded ones. The disease-resistant and low-maintenance plant is Hardy and flowers from May to July with yellow-green and yellow-brown flowers.