Many houseplants benefit from a summer spent outdoors. Move them into open air when the weather is thoroughly warm in spring or early summer, and bring indoors well ahead of frost time in autumn. They need the same care as other plants in the garden. Provide routine pruning, regular spraying to prevent insect damage, watering in the absence of sufficient rainfall, and biweekly or more frequent feedings of soluble fertilizer. It is easier to care for potted plants being summered outdoors if they are grouped together in one or two places rather than scattered over the garden.