The growth of Canna is suitable for the whole day, the environment is too dark and the light is insufficient, which will delay the flowering period. If it is placed in a cool place when flowering, the flowering period can be prolonged.
The suitable growth temperature of Canna is 15 ℃ - 30 ℃, when it blooms, it can prolong the flowering period if it is placed in a place with low temperature and no light, and the environmental temperature can not be lower than 10 ℃.
When the temperature is above 40 ℃, Canna can be moved to a cool and ventilated place. Before and after frost, Canna can be moved to a temperature of 5-10 ℃ to survive the winter safely.
During the growing period, Canna need to spray water on the leaf 1-2 times a day to keep the humidity.
Because Canna is very fond of fertilizer and moisture tolerance, it needs to be watered in the basin, and the number of watering should be controlled according to the actual situation.
In addition, top dressing should be done 3-4 times a month in the period of vigorous growth.
Canna does not have a high demand for soil, but it grows best in loose and fertile sandy loam with good drainage, and it can also grow in fertile and clayey soil.
During the growing period of Canna, it is required to have sufficient light to ensure that it receives direct sunlight for at least 5 hours every day.
Sometimes, Canna plants in pot will appear the disease of withered and yellow leaves, which is mainly caused by too much ferrous sulfate.
If the fertilization is too thick in summer, the root of Canna will be burned to make it "burn to death".
Stop fertilization during the flowering and winter of Canna.
In hot summer, if the water temperature is too cold, it will also cause the edge of the leaves to scorch.
When the flower at the end of stem falls behind, its stem and branch should be cut off from the base at any time, so as to sprout new buds and grow flower branches to bloom one after another.
