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.
G. A. F., Waltham, Mass., says: - "I send in this package a few Iona Grape roots and wish you would be kind enough to inform me if the knots on the roots are caused by the Phylloxera. Please answer through the columns of your valuable magazine."
[Yes, it is the Phylloxera, and a very bad case. Generally, as we have seen, only the fibres are attacked. In these, many of the main roots are suffering also. Such Grapes should not be planted until every swollen part be cut away. - Ed. G. M.]