Lighting: full or half sunshine.
Temperature: the growth temperature is 5-25℃, which is easy to weaken and grow in vain if it is overheated. If it is too cold, the ground will wither and enter a dormant period.
Flowering period: Origin: June-August. The autumn sowing time in the eastern region is from March to May.
Breeding: it is difficult to cross the summer in the southern plain, and it is generally cultivated as an annual. Breeding mostly adopts sowing method, which has strong self-sowing ability.
The seeds are big and resistant, so direct seeding is enough. It is advisable to keep the temperature around 10 degrees, and sow in autumn. When it is below -5℃ in winter, it should be transferred to the greenhouse.
Inverted pot is a straight-rooted plant with abnormal root expansion, so it is not suitable for transplanting during the growing period. Potted plants are acceptable, try to choose deep pots. In the vegetative period, the leaves are clustered, and only in the flowering period will there be elongated flower stems.