I realise yours is an American site, but some users of the internet here in Australia may not realise that. You should include a disclaimer that, here in Australia, Dutchman\'s Pipe is an ongoing threat to the vulnerable Richmond Birdwing Butterfly. The RBB normally lays its eggs on only one vine (Pararistolochia praevenosa - Common Name Richmond Birdwing Vine). The Dutchman\'s Pipe emits a similar but stronger odour than the RB Vine and the RBB will lay its eggs on it in preference to the RB Vine. However, Dutchman\'s Pipe is poisonous to the RB Caterpillars and kills them. Garry PS - Wikipedia incorrectly all sit the second smallest of our Birdwing Butterflies but it is one of the largest of all Australian Butterflies and State Government is promoting the growing of the RB Vine and destruction of the Dutchman\'s Pipe.
Certified GKH Gardening Expert
Thank you for the information and I have passed it on to our Editors!