A method for growing seedlings, comprising a providing of a matrix (1) of seedling containers (2, 6) with seedlings therein, comprising multiple rows of seedling containers, 3 providing of weight sensors (11), in which the weight sensors are smaller in number than the seedling containers, a measuring of weights of the seedling containers with the weight sensors, a providing of a control unit (14) that receives the measured weights, compares them to predefined threshold weight values and produces control signals corresponding to said comparison, and finally, the seedlings are watered by opening a watering system (15) based on said control signals. According to the inventive thought, each seedling container comprises a multiplicity of growing positions, the weight sensors are fixedly positioned and dedicated to measure the weights of specific seedling containers, wherein the control signals are based upon the measured weights, and wherein the seedlings are watered based on the control signals.
