This section is from "The Horticulturist, And Journal Of Rural Art And Rural Taste", by P. Barry, A. J. Downing, J. Jay Smith, Peter B. Mead, F. W. Woodward, Henry T. Williams. Also available from Amazon: Horticulturist and Journal of Rural Art and Rural Taste.
Mr. J. L. Stickney, of Wauwatosa, Wis., says a neighbor applied Paris Green to his bushes. It was mixed with four times its weight of flour, and very thoroughly applied; it killed the worms, sure enough, but it killed the plants also. He adds, however, the following comments :
Should I have occasion to again use the Green, I should mix with ten or fifteen times its weight of freshly slacked lime, or if this was not at hand, with fine ashes, and apply more sparingly. The Green should, of course, only be applied to young plants where there is no fruit.
When circumstances are favorable, very good execution may be done by shaking the worms on the ground when the sun is shining very bright and warm, say from eleven to one o'clock on a cloudless day. The heat of the soil and of the sun will quiet them in one minute. This can only be done where the soil is free from weeds or grass, and where the currants themselves do not shade too much. The worms are very delicate and tender, and the heat of the soil and sun is intense - decidedly more than they can bear. With heat, Paris Green and Hellebore, and with early and earnest attention - this last most important of all - we have little to fear from currant worms.
When we recall our currants from the fence corners and neglected places, and plant them as they should be, in a block by themselves, we may easily confine fowls among them before the fruit matures and after it is gathered. These will effectually destroy all injurious insects.
 
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