Cultivation of annual plants
The attention to be paid to the cultivation of annual plants varies from species to species and must take into account various factors such as lighting, the type of soil and irrigation.
The Petunias, for example, must be grown in a light and well-drained soil, in sunny positions. Keep in mind that if the soil is too wet and in the shade, many leaves will be produced, to the detriment of the flowers. The latter are often damaged by wind and heavy rains, so we advise you to choose sheltered locations. Fuchsias, on the other hand, prefer a well-drained soil, enriched with peat and soil, to be watered abundantly in dry periods. The most delicate varieties can be exposed outdoors from May to October and, after flowering, it is good to almost completely suspend the administration of water. The geraniums cannot remain outdoors between autumn and spring, from May onwards they can also be planted in the flower beds, as long as they are in full sun, in all fertile and well-drained soils. In regions with a particularly mild climate, geraniums can be kept outdoors even in winter. Begonias should be placed in illuminated positions but away from direct sunlight. If they are grown in greenhouses, they should be kept in the shade and, if the temperature exceeds 18 degrees, water them abundantly. The tuberous begonias are grown in pots as houseplants and must therefore be protected from cold currents, otherwise they risk losing the buds. For outdoor cultivation, instead, choose a well-drained and fertilized soil, in a sunny or partially shaded position. If, on the other hand, they are grown in a cold greenhouse, the tubers should be potted in March and the greenhouse should be aired and partially shaded during the summer. Verbena is planted in any type of fertile soil, enriched with fertilizer and in sunny positions. Some varieties grown outdoors can survive the winter if protected by a layer of leaves or straw. The annual species of Impatiens are grown in fertile and well-drained soil, in full sun or at least in partially shaded positions. Some species are also suitable for wet places. The marigold is grown well in all dry and well-drained soils, not too fertile and in sunny positions. It is possible to stimulate flowering if after seeding, for 30 days, the plants will be exposed in full light for at least 8 hours.