Be kind to these guys (above) because they turn into these guys...
Swallowtail larvae love parsley and, if you grow parsley, will eat it to the ground. Solution: plant a special parsley bed away from the one you use for your kitchen and gently place any swallowtail larvae you find in the wrong patch onto the parsley in their designated patch. (They also love dill...) Currently there are five swallowtail caterpillars in this particular patch. Two are visible in the photo. They are as beautiful as the butterflies they turn into, but a lot more destructive! Be a good neighbor and plant extra parsley for them. You will be rewarded with floating, fluttering, black and yellow striped beauty throughout your summer.