Indoor plants


Watering of begonias

Begonias are plants native to tropical and subtropical areas; they prefer a humid environment, so it is essential that the soil never remains arid for too long. During the spring and summer season, irrigation must be frequent, taking care to let the roots dry between one watering and the other, and obviously avoiding water stagnation that could cause damage, rot the plants and cause yellowing and the fall of leaves and buds. In autumn it is advisable to suspend irrigation, while in winter they should be carried out only when the soil is completely dry. An important operation to perform in summer is the vaporization of the leaves: it is preferable to do it in the morning, to ensure the necessary humidity during the day.

Cultivation and care

If the begonias are grown in the garden, before planting them it is essential to work the soil with the spade and weeds; the bulbs should be covered with a little earth, about 3-4 centimeters, with the concave part facing upwards. For the cultivation in pot it is suggested to use a specific soil for flowering plants mixed with peat; it is advisable to place expanded clay on the bottom of the container to improve drainage. Repotting must be done in the period between March and July, in a larger container than the previous one. As for pruning, it should only be implemented if the plants grow excessively; generally we just eliminate the dry leaves to prevent them from becoming a means for parasites.


The recommended fertilizer must contain, first of all, a high quantity of potassium, an element necessary for a luxuriant flowering; the other two essential macro-elements for fertilization must also be present, albeit to a lesser extent, namely phosphorus and nitrogen. Furthermore, in the fertilizers used for these plants, the so-called microelements, equally important for correct development, must not be missing, among which are iron, manganese, molybdenum, magnesium and copper. The supply of nutrients is essential in spring and summer; in this period the fertilization must be carried out with constancy and regularity, every fifteen days, while in winter it must be suspended. An excellent solution is the administration of liquid fertilizers together with irrigation water.

Begonias: Exposure and Diseases

For exposure, a place that is lit but not directly affected by the sun’s rays is recommended: light is important, but if excessive it could cause yellowing and burning of the leaves. The ideal temperature is between 15 and 20 ° C and should never drop below 7 ° C; in particular, icy air currents must absolutely be avoided, since begonias, considered their areas of origin, fear the cold. On the other hand, too much humidity could cause rot, mold and mildew such as powdery mildew; the method to prevent the latter is to increase ventilation, while special fungicides are used to eradicate it. Among the parasites, extremely annoying are aphids, which however can be easily eliminated with natural solutions such as nettle macerate.

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