"One of the worst enemies is the Aphis roses, which sometimes covers all the young branches and exhausts the sap from the tender leaves and shoots. The female aphis produces her young throughout the entire year, and is particularly active on plants which are kept in warm rooms. These are most effectually destroyed by brushing them with a soft brush into a basin filled with tobacco juice. They may also be killed by fumigating with tobacco smoke or the vapor of burning solanum and tomato leaves; but it is advisable to sprinkle the plants well with water, so that the atmosphere may not become too dry from the effect of the fumigation. Another very troublesome insect is the red spider (acarus tetarius) which is generally found on the under side of the leaf. It sucks the sap from the leaves, which drop off. and the plant appears in a sickly condition. This pest may be destroyed by sprinkling the plants, and particularly the under side of the leaves, with soot dissolved in water; this remedy is at the same time a good fertilizer." - California Horticulturist.