
Many suggest that our world would look a lot different if we did not have beetles. Recent reading and long ago high school biology suggests that there are tens of thousands of different beetles in the world. Many are scavengers; some are beneficial while many are pests.
Unless you live in a world of concrete and pavement, mile a minute weed has almost certainly found you. The plant was introduced in York County many years ago as an ornamental vine with jaggy foliage and beautiful blue berries. For decades it was well behaved before going wildly invasive five or 10 years ago. Targeted releases are scheduled. Our farm was buried somewhere on the list of release sites. As we climbed the list a funny thing happened.
We were told to scout our infestations, and, to every one’s surprise, the beetles had already arrived on their own despite the fact that there have been only a few releases in southern Lancaster County to date.
That surprise reminded me of another successful use of a predator beetle. Some 15 years ago my tenant built a rather large cage or something covered with fine meshed wire to raise a beetle that ate purple loosestrife. At the time, purple loosestrife was the demon plant that was choking many wet areas.
Releases of that insect turned the tide on purple loosestrife with no apparent bad side effects. One can only hope that the work with mile a minute vine will follow the same road.
Shifting now to the beetles that I think are the worst garden pests. I am referring to the potato beetle and the one that loves beans.
One of my almost-retirement jobs is to provide homeward transportation to several employees. This gives me a perfect opportunity to view some gardens on an almost daily basis. I have been especially watching one patch of potatoes.
I am aware that this family shuns spraying, so I have been watching for the potato beetles. One day a month or so ago I noticed that the vines were covered with a white material. Finally, when I could still see no beetles several days ago, my curiosity got stronger than my ability to wait. so I asked.
To digress a bit, I grew potatoes commercially nearly 40 years ago and then potato beetles made the chemical companies happy.
The white stuff is diatomacous earth, the ground deposits of ancient seashells. There is a synthetic version. The principal is that when the beetle eats the leaves it ingests the material which lacerates their guts, and they are no more. Applications are made whenever beetles appear. To date there has been three applications, usually made in the morning when the foliage is damp.
One good one, one or two bad ones and one who’s benefit is still to be determined. That’s enough beetles for today. Diatomacous earth is headed for my bean patch and my eggplants too. I may even try a few potatoes next year.
Last summer, after eating his fill of the wild milkweed that permeates the flower beds below the store, a fat monarch caterpillar made his way in the door and spun his chrysalis on one of the chairs. 5-yr old Liam and I had a blast watching it hatch one warm day. What a great experience to share.