Balcony flowers have particular water needs; water scientifically to prevent pests and diseases

In the depths of winter, all home-grown potted flowers are brought indoors, and quite a few are moved onto balconies. It is worth noting that watering and spraying flowers on the balcony requires great care.

First, pay attention to water temperature: the temperature of the water used should not differ too much from the soil temperature and air temperature. Second, pay attention to watering time: it can be done before 10 a.m. and after 4 p.m. While watering, do not neglect loosening the soil of potted plants, and for some ornamental plants it is best to add a small amount of ferrous sulfate.

In addition to frequent spraying, for some more valuable flowers that require higher humidity, such as camellia, azalea and clivia, a plastic film cover can be used, which both increases humidity and protects against cold and dust. To make a cover, generally use bamboo strips or wire to build a frame; it can be round, flat, single-slope roof-shaped, or any other shape you build according to space, habits and preferences, then cover the outside with plastic film. Be careful to leave ventilation openings to prevent poor air circulation and excessive humidity, which can cause the flowers to rot.

In addition, fertilizing flowers, grasses and trees in winter is very important, but not all flowers need fertilizing. For balcony potted plants in a dormant or semi-dormant state, stop fertilizing; for vigorously growing foliage plants, a 0.3% urea solution can be sprayed or applied with water, and multi-element compound fertilizer granules can also be scattered on the pot surface. For flowering and fruiting ornamental trees and shrubs, such as white orchid, Milan, pomegranate, crape myrtle and jasmine, continue to apply quick-acting phosphorus and potassium fertilizer. For Chinese elm, plum yew, holly, Buddhist pine, trident maple, water poplar and boxwood, after each pruning, apply a light fertilizer once. Because some flowers have withered leaves in autumn and winter, prune them in time; especially for tree-stump bonsai, pinching or pruning is even more necessary, and pest and disease control must also be done well, using drugs such as trichlorfon to prevent the appearance of pests and diseases.