. The culture of pot-plants in rooms, greenhouses, & frames. Plants, Potted; Container gardening. 42 THE CULTURE 0¥ POT-PLANTS the plants are kept too wet, they are liable to decay at the collar. If at any time they are allowed to get excessively dry, they are almost sure to be infested with aphides (green-. FiG. 17.—Primula sinensis, soil heaped round the base to induce the plant to form rooted offsets. fly), which are not easy to get rid of because of the difficuhy of spraying underneath the leaves, where the insects con- gregate. It may be necessary to apply an insecticide with a brush.


. The culture of pot-plants in rooms, greenhouses, & frames. Plants, Potted; Container gardening. 42 THE CULTURE 0¥ POT-PLANTS the plants are kept too wet, they are liable to decay at the collar. If at any time they are allowed to get excessively dry, they are almost sure to be infested with aphides (green-. FiG. 17.—Primula sinensis, soil heaped round the base to induce the plant to form rooted offsets. fly), which are not easy to get rid of because of the difficuhy of spraying underneath the leaves, where the insects con- gregate. It may be necessary to apply an insecticide with a brush. A fungoid disease sometimes causes white, brown- edged spots on the leaves. To prevent its spreading a very weak solution of permanganate of potash should be used. Primulas are best grown in partial shade. Their flowers will. Please note that these images are extracted from scanned page images that may have been digitally enhanced for readability - coloration and appearance of these illustrations may not perfectly resemble the original Davidson, Hugh Coleman, b. 1852. London, C. Lockwood


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