Lettuce has a high water requirement and needs as balanced soil moisture as possible.
Due to its relatively shallow root system, it is more exposed to the unfavorable effects of dry periods than other types of vegetables and therefore does not tolerate changes between drought and moisture. Too high a water content in the soil also has a negative effect. One pours therefore in shorter time intervals, with the single dose at about 12 to 15 l/m2 should be. However, once head formation begins, care must be taken with watering, to prevent rot. Under glass and foil is best in the morning- or poured in the morning hours, so that the plants can dry off again in the evening.
