During the cultivation of calendula, the temperature between 7 ℃ and 20 ℃ is the best, which is most conducive to growth. It has a certain ability of cold tolerance. In winter, the seedlings can endure the low temperature environment of - 9 ℃ and the adult plants can endure 0 ℃. If the temperature is too low, it can be moved to indoor maintenance management to avoid frostbite of plants. However, it should be noted that once the winter temperature exceeds 10 degrees, the plants are prone to grow in vain, which will affect the flowering and growth of the next year.
