Oxalis likes warm and humid environment, the most suitable growth temperature is 16 ~ 22 ℃.
It is not cold resistant, the plant stops growing below 10 ℃, and leaves wither at 0 ℃. However, as long as the underground rhizome is not frozen, new leaves can still germinate and grow normally in April next year. In winter, the blade should be in normal condition and the temperature should be kept above 5 ℃.
It is not resistant to high temperature. When the temperature is over 35 ℃, the leaves curl, grow slowly and enter the dormancy period. It is necessary to spray water on the leaves in time, shade and strengthen ventilation.
Oxalis need enough light to grow in full day or half day.
Spring and autumn season to receive sufficient sunlight, overcast leaves will cause dull, at the same time petiole thin, scattered plant type. But also to avoid direct sunlight, may to September to appropriate shade, to avoid sunburn.
Oxalis has strong phototaxis. It should be placed on the balcony and windowsill for maintenance. The position of the plant should be changed frequently to make it receive light evenly around.
Resistant to drought, but like humid environment.
During the growing period, keep the basin soil moist and adhere to the principle of "no drying, no watering, no watering". In summer high temperature season, the plant enters the dormancy period. At this time, water should be sprayed to keep the basin soil slightly wet. In winter, the temperature drops below 10 ℃. When watering, it is better to dry than wet to prevent the bulb from rotting.
Appropriate rain is conducive to growth and development. But we should drain the water in time. The accumulated rain in the basin soil will cause the leaves to rot and the plants to die.
Oxalis likes humid environment. When the growing environment is dry, spray water around in time to improve the humidity.
When you go to the basin, you should apply enough base fertilizer.
In order to make the plant grow healthily and ensure the leaves to be thick and glossy in the growing season, nitrogen, phosphorus and potassium compound fertilizer should be applied once a month. Pay attention to the concentration when applying fertilizer. If the concentration is too high, it will burn the corm and affect the growth. Stop fertilization from July to August.
Pay attention not to apply a single fertilizer, especially nitrogen fertilizer, will make the leaves turn green from purple, affecting the viewing. When applying fertilizer, do not splash liquid fertilizer on the leaf surface, which is easy to cause leaf diseases.
The following three conditions need to be pruned:
When the growth of the plant is too strong, it is necessary to remove the dense leaves in time, improve the ventilation and light transmission conditions, and promote the growth.
Of course, in the daily maintenance, we should remove the withered and yellow leaves in time to reduce the occurrence of diseases and insect pests.
When the petiole is too long or the plant type is not beautiful, you can cut the leaves again to make them grow new leaves.
The growth of Oxalis is very fast. It should be turned over once a year in spring. When turning basin, it is better to change the soil once, and the medium acid soil with loose and fertile soil and good drainage is preferred.
The common diseases and insect pests of Oxalis are leaf spot, grey mould, root rot, red spider, aphid, snail and so on. For specific control methods, see another article, common diseases and pests of Oxalis and their control.
