The optimum temperature for camellia growth is between 15℃ and 32℃, which requires a certain temperature difference and the environmental humidity is above 60%. Most varieties can withstand low temperature (natural overwintering, Yuncha is not cold-resistant), and generally can overwinter naturally in the south of Huaihe River, while Suzhou City is in the north of Huaihe River, and the temperature and humidity can not meet the requirements.

Camellia cultivation soil should be acidic and require good air permeability. In order to promote the growth of root hairs, peat, sawdust, red soil, humus soil or a mixture of the above substances can usually be used for culture. Camellia needs stronger light than azalea, which can be shaded in spring, autumn and winter, and 50% in summer. The soil quality in Sixian County of Suzhou City can't meet the requirements.