Method and Apparatus for harvesting crops, the apparatus (1) comprising a carriage (2) provided with a harvesting device (41), a ground height measuring device to measure or estimate the ground height (S2) at each harvested crop, a crop height measuring device to measure the height of a crop(S4), a processor operatively connected to the ground height measuring device to generate baseline ground data (S3) and operatively connected to the crop height measuring device to determine a desired harvest height (S5), a comparator to compare the baseline ground data to the desired harvest height to determine if a particular crop is to be harvested by the harvesting device.