Petunia in the greenhouse

Petunias are grown very ex-tensively for use in summer bedding, but they also make good decorative plants in the greenhouse if cultivated in pots.

For greenhouse decoration they can be sown in January on fight, open soil. Prick them out singly into small pots and pot them on into 5-inch pots for flowering. Petunias need no special cultivation, the soil for the final pots should be sufficiently rich to make strong, healthy plants.

As soon as the flower buds begin to show give occasional doses of weak liquid manure. The newer hybrids are obtainable in varying hoights from 5 to 18 inches, and also in different colours including rich blue, rose, violet, and white.

Phalsenopsis. Stove evergreen epiphytal orchids, cultivated usually in baskets, or fixed to blocks of wood sus-pended from the roof of the stove. They include a number of species and hybrids, some of them known under the common names of Moth Orchid and Indian Butterfly Plant. See also ORCHIDS.)

Phoenix Palms. These are well-known palms used for greenhouse and room decoration. The genus includes the Date Palm.

Pot in February or March in a mixture of loam, old decayed manure and coarse sand. A lump of sulphate of iron kept on the surface of the soil makes the foliage a rich, healthy green. The foliage should be syringed daily in the morning and evening during the summer months and less frequently during the winter.

Platycerium. Stove and greenhouse ferns that are evergreen, and with fronds that resemble a stags horn. Use a compost of equal parts fibrous peat and sphagnum moss, and cover the roots with this on a block of wood.

The plants must be held in position by means of copper wire. Add more sou annually in February or March. Give plenty of water in the summer and do not allow the temperature to drop below 45 degrees in winter.

PlatyclinJs. Stove epiphytal orchids, generally grown in well-drained pots in the plant stove. They have very fragrant flowers and are easily cultivated. Propagate by division of the pseudo-bulbs just as they are beginning to grow.

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