This section is from the book "The Gardener's Monthly And Horticulturist V27", by Thomas Meehan. See also: Four-Season Harvest: Organic Vegetables from Your Home Garden All Year Long.
Perhaps the florist has few more subtile enemies to contend against than mildew, and for this reason much has been written upon the subject, both as regards its prevention and its cure. But as it is one of those visitants which " walketh in darkness" and makes no sign where the next point of attack shall be, even the most watchful frequently suffers much loss before remedial measures can be applied; and even these, when applied, do not always prove an unmixed good.
For years past I have been familiar with a number of remedies for this disease and believe that several of them may be advantageously applied, but it is only recently that a cure that is safe, simple and efficacious, has come to my knowledge. Sulphur, as is well known, kills mildew, but its application is not infrequently attended with disastrous results; and just how to prevent this lies the merit of the remedy we recommend. It consists of sulphur and linseed oil mixed to the consistency of paint and brushed on the flues or hot water pipes. In this state it can be freely used without hurt to the most delicate foliage; but how the oil neutralizes the scorching quality of the sulphur without weakening its power to kill the parasite is more than I can explain, but I do know that it has this effect, and therefore may be relied upon as a safe remedy for this troublesome pest. New Haven, Conn., Dec. 31st, 1884.
 
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