How often should greenhouse crops generally be watered?

Greenhouse crops should generally be watered whenever the top inch of soil feels dry because this approach allows for proper moisture management, which is critical for plant health. Monitoring the soil moisture level in this way helps ensure that plants receive adequate water without overwatering, which can lead to root rot and other issues related to excessive moisture.

Allowing the top layer of soil to dry out slightly encourages healthy root growth and improves soil aeration. Different plants have varying water needs, and this method provides a practical guideline that can be adapted as necessary based on the specific requirements of the crops in the greenhouse.

The other approaches, such as watering once a month or only when plants show visible signs of wilting, can lead to stress on the plants. Daily watering regardless of soil moisture can cause overwatering, which can be detrimental to the plants' health. This makes the practice of checking the top inch of soil for dryness a balanced and effective method for scheduling irrigation in a greenhouse setting.