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Aristolochia macrophylla (Aristolochia durior)

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Common Name: Dutchman’s Pipe

Open shade to sun; moderately wet to medium moisture level; best in deep,fertile loam but tolerates moderately coarse gravelly or sandy loams to moderately fine silt loams; slightly acid to neutral pH.

6-30 feet height (depending on support) by 4-10 feet width; blooms late spring into summer; chocolate brown flowers with a yellow tube; fruit is a pod-like capsule.

Growth Rate:  Grows at a medium rate after transplanting and then fast and rank growing, from 4 to 6 feet in one year.   If given the appropriate trellis or other support, it is capable of covering the structure in a single growing season.

Maintenance:  Easy maintenance.  Infrequent susceptibility to diseases and insects.  Cut back to the thicker stems in late winter to control growth and reduce the mass of tangled stems.

Propagation:  Seed germination code C(90) at 40 degrees or sow outdoors in fall.  Grows well from seed.  Moderately difficult from cuttings.

Native Region:  Eastern half of the state

Deciduous vine that climbs by twinning.  Best supported with wire cable or fencing.  Has large, heart-shaped, overlapping leaves 6-15 inches across that tend to hide the inconspicuous flowers. Good plant for providing a privacy screen. Will grow in considerable shade but growth will be thinner and plant more likely to develop root suckers.  Important larval food source for the Pipevine Swallowtail butterfly; otherwise has very low wildlife value.

Dutchman’s Pipe - Aristolochia macrophylla (Aristolochia durior) 2
Photo Courtesy of the University of Tennessee Dept of Plant Sciences, Woody Plant Identification http://utgardens.tennessee.edu
Dutchman’s Pipe - Aristolochia macrophylla (Aristolochia durior)
Photo Courtesy of Kris Light, East Tennessee Wildflowers, http://www.easttennesseewildflowers.com/