Begonia likes alkaline soil, and its PH value should not be lower than 7. In addition, it also requires loose soil and sufficient nutrient content. Some river sand can be mixed into humus soil to make its culture soil.

Second, light.

Begonia likes light and is not tolerant of shade, so it needs to be kept in a place with sufficient light. In addition to shading when the light is too strong in summer, sufficient light is needed at other times.

Third, moisture.

Water the begonia until it is dry, that is, when the soil in the basin is not completely dry, water it until it is dry, and pour it thoroughly until the water comes out of the bottom hole. In addition, if it is rainy, it is best not to water it, and the accumulated water in the basin should be drained in time.

Fourth, fertilization.

In early spring, apply some organic fertilizer to Haitang to supply nutrients; Topdressing organic fertilizer in autumn, and topdressing phosphorus and potassium fertilizer after flowering; Stop fertilizing when the weather gets cold in winter. You can choose some special fertilizers for begonia.

Verb (abbreviation of verb) matters needing attention

1, timely drainage. After watering, the accumulated water should be removed in time, otherwise the begonia flowers will rot. You can raise the flowerpot or put it in a ventilated place to drain the accumulated water.

2. Pay attention to ventilation. Attention should be paid to timely ventilation when raising begonia, and it should not be placed in too closed environment, otherwise it will be difficult to grow normally.

Extended data:

Breeding method:

It is often used for sowing, dividing plants and grafting propagation. Grafting is the main method, layering and branching can also be used. Sowing method is only used for breeding. Grafting rootstocks mostly use begonia or Vitex negundo. Extensive cultivation resistance and wide adaptability. Only by proper irrigation, fertilization and attention to shaping and pruning can plants be healthy and flowers multiply. Sowing can be autumn sowing or spring sowing after sand storage. Seedling grows slowly, takes 5-6 years to blossom, and often mutates, so it is only used for rootstock cultivation and cross breeding. Horticultural varieties are propagated by grafting, with Vitex negundo or Begonia seedlings as rootstocks, and branch grafting and bud grafting can be used. Branch grafting can be cut and split, and bud grafting is mostly in the shape of "D". Many branches are planted before germination in early spring or after defoliation in autumn and winter.

References:

Baidu encyclopedia-begonia flower