There are a number of platyceriums available, but this is the one most likely to be encountered. All require similar conditions in which to grow, and the emphasis should he on moisture and warmth.

Plants will do quite well in the 10 Celsius minimum suggested, but will thrive that much better if the temperature can be kept at a higher level. It is important to remember, though, that hot and dry conditions can do more harm than good, so increased temperatures should also call for increased humidity.

Water freely when in active growth and moderately at other times; if suggested temperatures cannot be maintained during the winter months plants will fare better if the compost is kept on the dry side. This advice applies to almost all plants grown in the greenhouse, garden room or indoors.

Nurserymen raise primulas from seed by the million annually. The principal varieties for pot culture are Primula sinensis, P. acaulis, P. obconica and P. malacoides. In recent years we have seen a vast increase in the number of P. acaulis available.

Another method of setting off the leaves to best advantage is to attach young plants to flat pieces of wood or bark, using moss and plastic-covered wire, and hanging them on the wall of the garden room, or indoors. If displayed in this way it is important that the plants should be plunged in a bucket of water at least once each week. Attempting to water them by spraying over the moss will be quite futile.

The primulas will all require cool, light and moist conditions in which to grow. Having flowered indoors the acaulis varieties can be planted out in the garden in a moist, shaded position, but the others should be discarded when no longer attractive.