The present invention relates generally to the field of plant breeding and concerns a method for determining the point at which a plant starts to flower. More specifically, the invention concerns a method for determining the start of flowering on an individual plant basis by measuring the reproductive structures of plants from digital images of these structures and deducing the start of flowering from the measurements and average growth rates. The invention also concerns apparatus for determining the start of flowering in plants, particularly in a high-throughput manner.
