Hydroponic vegetables are lettuce, spinach, watercress, rape, amaranth and so on. Lettuce: hydroponic lettuce is very common, the best growth temperature between 15 ~ 25 ℃, the temperature can not be too high or too low, lower than 15 ℃, the growth will slow down, the temperature is higher than 30 ℃, it will grow poorly. Spinach: hydroponic spinach should choose the appropriate varieties, should be good disease resistance, strong resistance to shoots varieties are appropriate. Watercress: compared to other vegetables, is more suitable for hydroponics, so the flavor of hydroponics out of the better than the soil cultivation flavor.

Hydroponic vegetables are lettuce, spinach, watercress, rape, amaranth and so on.

1, lettuce: hydroponic lettuce is very common, the best growth temperature between 15 ~ 25 ℃, the temperature can not be too high or too low, lower than 15 ℃, the growth will slow down, the temperature is higher than 30 ℃, it will grow poorly.

2, spinach: hydroponic spinach should choose the appropriate varieties, should be good disease resistance, strong resistance to shoots varieties.

3, watercress: compared to other vegetables, is more suitable for hydroponics, so the flavor of hydroponics out of the better than the soil flavor.

4, oilseed rape: hydroponic culture to protect the appropriate temperature between 12 ~ 25 ℃, and provide sufficient light to the plant.

5, amaranth: like to grow in a warm environment, heat-resistant, suitable growth temperature between 20 ~ 27 ℃, when the temperature is lower than 20 ℃, the growth will be slow. If the temperature is lower than 10 ℃, seed germination will become difficult.