What the article doesn't mention is that I brought the Friends of Black Hills 2 van loads of white turtlehead and last year prepared and gave them a presentation on how to captive breed them. Denise Gibbs had helped me in the past with giving me loads of turtlehead plugs. I raised these and maintained them in pots. I also propagated my own plants, too. Potted plants are easier to feed to larvae.
I have answered questions for the Friends of Black Hill Regional Park on this topic during the process. I even went out into the field and advised them on what web to take. I lost my Baltimore colony this year. So far, nothing at the park or home. I got second year caterpillars in the spring of 2006 from NY (with a USDA permit) so I was breeding them for 5 years before they crashed. I was able to collect some eggs from 2 males and 2 females that remained, but they didn't hatch. I told the Black Hills group that this is a learning process. The why, the how, is all part of the science of it. Meadowlark Botanical Gardens (location of my colony) did mow their meadow in late spring this year--not a good idea. They left a small portion where the Baltimores were located, but the Baltimores spread out in the spring.
I also took Jay McRoberts a van load of white turtlehead, some white ash, and blue vervain, too. He has a Baltimore colony on his property. I was getting pretty depressed this spring without any caterpillars to feed so I let Jay have it all. No money exchanged hands, but I told Denise Gibbs that this was a good opportunity to work with Jay to diversify the two groups of Baltimores. Jay gave them a few caterpillars and then they ended up releasing adults (I don't know if they took him eggs) on Jay's property. I think one of the major problems is genetic diversity. There are so few colonies that they are becoming inbreed, which weakens the existing colonies.
Herndon, VA (USA)
Take care of the small things....