A computer implemented method for controlling of a growth cycle for a plant of a predetermined type comprising chlorophyll arranged in a controlled environment, to enable said plant to reach a desired growth status, said method comprising the steps of: defining a set of growth states, each of said growth states being a state of said growth cycle where a selection of property values of respective detectable properties of said plant is within a defined range, and each of said growth states being associated with a plurality of growth regimes defining control of an artificial light arrangement for adjusting light spectral composition and/or light intensity in order to modulate or improve the growth of said plant; and when in a present growth state: determining, using input from a plurality of sensors arranged to acquire a detectable property indicative of the growth status of said plant, a current growth status of said plant, wherein said current growth status comprises a set of said property values of respective detectable properties of said plant, and selecting (S8, 313) a best growth regime of said plurality of growth regimes and controlling said artificial light arrangement according to said best growth regime, wherein the step of selecting (S8, 313) a best growth regime in said present growth state is based on said desired growth status, said determined current growth status, and on previously selected growth regimes in previous growth states of said plant. defining a set of growth states, each of said growth states being a state of said growth cycle where a selection of property values of respective detectable properties of said plant is within a defined range, and each of said growth states being associated with a plurality of growth regimes defining control of an artificial light arrangement for adjusting light spectral composition and/or light intensity in order to modulate or improve the growth of said plant; and when in a present growth state: determining, using input from a plurality of sensors arranged to acquire a detectable property indicative of the growth status of said plant, a current growth status of said plant, wherein said current growth status comprises a set of said property values of respective detectable properties of said plant, and selecting (S8, 313) a best growth regime of said plurality of growth regimes and controlling said artificial light arrangement according to said best growth regime, wherein the step of selecting (S8, 313) a best growth regime in said present growth state is based on said desired growth status, said determined current growth status, and on previously selected growth regimes in previous growth states of said plant. determining, using input from a plurality of sensors arranged to acquire a detectable property indicative of the growth status of said plant, a current growth status of said plant, wherein said current growth status comprises a set of said property values of respective detectable properties of said plant, and selecting (S8, 313) a best growth regime of said plurality of growth regimes and controlling said artificial light arrangement according to said best growth regime, wherein the step of selecting (S8, 313) a best growth regime in said present growth state is based on said desired growth status, said determined current growth status, and on previously selected growth regimes in previous growth states of said plant.