Asparagus is native to the eastern Mediterranean coast and Asia Minor. It is cold-resistant and heat-resistant, and can be planted in both north and south China. It is warm in summer and cool in winter. Areas that are not cold in winter have high yield and poor quality; High quality and low yield in alpine region (due to short growth period).

(1) temperature. The initial germination temperature of asparagus seeds is 1℃, the optimum temperature is 25 ~ 3℃, and it takes about 1 days to emerge. Plant growth is the fastest at 2 ~ 3℃; When the temperature is lower than 15℃, the growth is slow, and the tender stems are reduced. 5 ~ 6℃ is the lowest growth temperature. Only when the temperature is above 1℃ will the tender stems stick out of the soil surface. The quantity and quality of tender stems are good at 15 ~ 17℃, which is the most suitable temperature for harvesting. When the temperature is higher than 3℃, the quality is poor (the base and skin of tender stems are easy to fibrosis, and the scales of bamboo shoots are easy to spread). When the temperature exceeds 35℃, the growth of tender stems stops.

(2) soil. Asparagus is suitable for planting in loose and breathable soil with deep soil layer, low groundwater level and good drainage. Sandy loam and loam rich in organic matter are the most suitable. It is suitable for slightly acidic to slightly alkaline soil (pH 5.5 ~ 7.8), and pH 6. ~ 6.7 is the most suitable.

(3) illumination. Asparagus likes light. On sunny days, the photosynthesis of plants is vigorous, and the yield of tender stems is high and the quality is good. Rainy days, insufficient light, low yield and poor quality of tender stems.

(4) moisture. Asparagus root system is deep and wide, and the transpiration area above ground is small, so it is drought-tolerant. Not tolerant to humidity, stagnant water is easy to cause stem blight. The development of absorption roots is weak, water shortage affects the occurrence of tender stems, and it is easy to age.