Reduce watering: control watering, and you can wait until the soil is dry before watering. Too much watering in winter will not only rot the roots, but also increase the chance of frostbite.
Stop fertilization: Plants need less nutrients in winter, so it is necessary to suspend fertilization and resume fertilization after the temperature rises in spring.
Lighting conditions: ensure sufficient lighting every day, and you can keep it on the balcony. Yellow leaves are easy to appear without lighting.
First, enter the room in time.
Canna is a tropical plant with poor cold tolerance. The minimum wintering temperature shall not be lower than 5℃. If it is not lower than 5℃ in winter in the south, it can be placed outdoors in winter. If the temperature is low in winter in the northern cold area, it should be moved indoors before cooling down in winter, and the indoor temperature should be kept above 10℃ to ensure its smooth winter.
Second, reduce watering.
In the low temperature environment in winter, the growth of canna will slow down and the demand for water will be greatly reduced. Therefore, to reduce the amount of watering, just water the pot soil in time after it is dry, so as to ensure the normal growth of plants without water shortage. If you water too much, the low temperature in winter can't evaporate in time, plants can't absorb it in time, and it is easy to accumulate water and rot roots.
Third, stop fertilization.
In winter, the life activities of plants are reduced, and the demand for nutrients is greatly reduced, so fertilization is not necessary in winter, and fertilization can be resumed when the weather gets warmer in April in spring. Excessive fertilization in winter is easy to cause fertilizer damage, and even serious death.
Fourth, lighting conditions.
In winter, whether it is outdoor planting or indoor potted plants, we must ensure sufficient light. When we spend the winter indoors, we can put it on the windowsill and let it receive light for a long time every day, which can keep the plants in a state of full of green. If we lack light for a long time, the leaves will turn yellow easily, which is not conducive to the growth of plants in the coming year.