This section is from the book "The Gardener's Monthly And Horticulturist V24", by Thomas Meehan. See also: Four-Season Harvest: Organic Vegetables from Your Home Garden All Year Long.
In the grapery, even with fair attention, we are often troubled with red spider; and there, also, we often find the mealy bug in all his glory. What brings him there? Some enthusiastic gardener who wants to grow a stove plant or orchid and has no other place for them. We also find green fly and thrip. All of these can easily be destroyed by syringing with the following mixture: 1 gill kerosene, 2 lbs. whale oil soap, 1 lb. tobacco soap, 80 gall water. This will be more effective for the red spider than sulphur or its fumes, and also for mealy bugs. Fumigations of tobacco are effectual for destroying both the aphis and thrip.
Dry rot of the roots shows itself by the flagging of the young leaves when exposed to the sun, and shanking and shrivel, and all others, principally arise from severe summer pruning and over-cropping. I think if the vines were planted farther apart than they usually are, say six feet, there would be some chance for the plant to bear heavy crops, by reason of having plenty of foliage and healthy roots to carry on the circulation rapidly, and so draw and elaborate sufficient nutriment to sustain it. Naturally a plant extends its roots in proportion to its branches. As this cannot be very easily done in the grapery, we ought to give the vines at least some chance for existence, either by cropping lightly or in some other way.