This section is from the book "The Gardener's Monthly And Horticulturist V20", by Thomas Meehan. See also: Four-Season Harvest: Organic Vegetables from Your Home Garden All Year Long.
Rev. W. H. W., of Reading, Mass., complains that the crop of grapes, "in some cases at least, are sadly diminished by the unprecedented number of rose-bugs." Now that gives me an opportunity once more to speak a word for the Ailanthus. Some years ago in passing under an Ailanthus, I observed a great number of rose-bugs under it. Some apparently dead, others helpless and not able to fly, while many were trying to creep up the body of the tree and surrounding shrubbery. I mentioned it to my husband (who was an invalid), and he said he had observed it before, that he thought the flowers of the tree had attracted and then sickened them; and that as a proof that instinct does not always guard from mistakes, he had observed that the young robins would alight on the Alder Buckthorn (Frangula Caroliniana) and eat the berries until they were very sick. By-the-by, that same Frangula was a very handsome tree, twelve or fifteen feet high, with beautiful glossy foliage, and berries first turning red and then a shining black. It was thought worthy of being photographed.
But again, the Ailanthus - has any one observed a diminition of rose-bugs in its neighborhood ? We had very few in after years.
Perhaps they come periodically.