Nearly five years ago in late September 2007, I photographed a male Pipevine Swallowtail Butterfly (Battus philenor) nectaring in my garden. I found mesmerizing its dark beauty, with black wings punctuated by brilliant orange spots and shimmering iridescence. The wings flashed electric blue in the fading late day sunlight and I became completely captivated!
Although the Pipevine Swallowtail is not rare in its southern range, this exotic looking butterfly is quite an unusual occurrence in the northeast, and even more rarely found on the eastern outer reaches of Cape Ann. Mine was a stray, carried in on a southerly breeze. I imagined that if a male can drift into our garden, so can a female. And if a visiting female found in my garden her caterpillar food plant, she would deposit her eggs. The following spring we planted the Dutchman’s Pipevine (Aristolochia macrophylla). Four years later, and our pipevine has grown well. With emerald green enormous heart-shaped leaves, she is quite a showstopper clambering over the back fence. The plant is named for its flower, which resembles a Dutchman’s pipe, although when ours flowers, the blooms are so small, so few, and so lost in the foliage, I barely know when it is in bloom. Our pipevine took several years to become established, but once firmly rooted, it grew vigorously, but not invasively. At the end of the growing season, or the beginning of the next, I cut the vine hard, down to the ground. Dutchman’s Pipevine grows in full sun and partial shade and is hardy in zones 4 to 8.
Aristolochia macrophylla had its glory days in gardens during the two previous centuries, prior to the invention of air conditioning. It was planted to cover porches and treillage; cooling and shading the rooms within. When looking through old photos you can easily spot the porches and arbors that are embowered with pipevine because of the distinctive heart-shaped foliage. I imagine Fred Bodin may even have a few pictures of pipevine shrouded porches in his treasure trove of vintage photographs.
About a week ago Saturday while doing chores in our backyard I noticed the rapid movements of a dark butterfly investigating the pipevine. I immediately paused because say, for example, if it was the more common Eastern Black Swallowtail, which deposits eggs only on members of the carrot family, it would not show the least bit of interest in the pipevine. Upon close investigation, it was a Pipevine Swallowtail and, without a doubt, it was a she! After first zooming in and out of the house to grab my camera, I observed her as she fluttered from tendril to tendril. She deliberately chose the tenderest leaves, pausing briefly several times to curl her abdomen to the underside to deposit her eggs. After she departed I ran in the house to tell anyone who would listen of the Great News. In our household my butterfly news is pretty much the family joke, although my husband kindly offered to get the tallest ladder from the basement. He held tight while I climbed to the top rung in search of eggs. I struck gold! Unlike the female Monarch and Eastern Black Swallowtail butterflies, which deposit eggs singularly, the Pipevine Swallowtail oviposits eggs in clusters. I counted somewhere between 25-30 eggs (very approximately) in the clutch we cut from the plant. I hope we have enough pipevine to feed this many hungry Pipevine Swallowtail caterpillars!
Map courtesy NABA