Plant for the automatic and sequential washing of bins, said bins being used for vegetable products, comprising in an ordered but not exclusive sequence: - a bin de-stacking station, - a bin overturning station, - a plurality of bin washing stations (5A, 5B, 5C) configured to carry out specific and respective liquid washing operations on the bins conveyed across them, - a station to turn-up again the bins passed over said bin overturning station, - a bin re-stacking station, - which bin washing stations (5A, 5B, 5C) are able of implementing a liquid washing treatment, on said bins, transportation or conveying means able of make said bins to pass in an ordered, continuous and in sequence way across said stations (3, 4, 5A, 5B, 5C, 6, 7), wherein said plant comprises also measurement and control means characterized in that said measurement and control means are able of detecting the dirt degree existing on each of said bins, and of selectively modifying said liquid washing treatment carried out on each of said bins according to a function depending on the dirt degree respectively, wherein said measurement and control means are connected to optical devices orientable towards the inner surfaces of respective said bins, and are able of detecting the optical or chromatic image emitted by said inner surfaces, wherein said measurement and control means: - are able of converting said optical or chromatic image into one or more electric signals having characteristics representative of said image, - and that are provided with devices able of comparing said signals to corresponding signals selectively pre-determined and previously stored, wherein said measurement and control means are provided with actuation elements (13A, 13B, 13C), connected by a processing and command unit, and are able of controlling one or more of the working parameters of said bin washing stations (5A, 5B, 5C). - a bin de-stacking station, - a bin overturning station, - a plurality of bin washing stations (5A, 5B, 5C) configured to carry out specific and respective liquid washing operations on the bins conveyed across them, - a station to turn-up again the bins passed over said bin overturning station, - a bin re-stacking station, - which bin washing stations (5A, 5B, 5C) are able of implementing a liquid washing treatment, on said bins, transportation or conveying means able of make said bins to pass in an ordered, continuous and in sequence way across said stations (3, 4, 5A, 5B, 5C, 6, 7), wherein said plant comprises also measurement and control means characterized in that said measurement and control means are able of detecting the dirt degree existing on each of said bins, and of selectively modifying said liquid washing treatment carried out on each of said bins according to a function depending on the dirt degree respectively, wherein said measurement and control means are connected to optical devices orientable towards the inner surfaces of respective said bins, and are able of detecting the optical or chromatic image emitted by said inner surfaces, wherein said measurement and control means: - are able of converting said optical or chromatic image into one or more electric signals having characteristics representative of said image, - and that are provided with devices able of comparing said signals to corresponding signals selectively pre-determined and previously stored, wherein said measurement and control means are provided with actuation elements (13A, 13B, 13C), connected by a processing and command unit, and are able of controlling one or more of the working parameters of said bin washing stations (5A, 5B, 5C).