This section is from the book "The Gardener's Monthly And Horticulturist V18", by Thomas Meehan. See also: Four-Season Harvest: Organic Vegetables from Your Home Garden All Year Long.
Robert Palmer (in September number) calls this a fungus, and may be correct, although some good authorities say it is occasioned by an insect. In my opinion, it is of more importance to grow verbenas well. There should never be any rust to remedy. It is better to throw rusty plants away, and get others that are young, clean and vigorous, and keep them so, and there will not be need to doctor them for the rust.
[We should be glad to have an article from our correspondent as to "growing Verbenas well," for we must confess to seeing rust on plants, that in old times we should have thought were under the best treatment. - Ed. G. M.]