Vegetable producers have to deal with product perishability, systems complexity, and to match farmers’ constraints and objectives with value chain expectations. In this context, we aimed to understand to what extent farmers adapt their crop planning to face increasing disturbances. We conducted a diagnosis of crop planning using a method inspired by diagnosis of uses with vegetable producers selling to middlemen in long value chains in the Roussillon plain, Southern France. Our analysis shows that farmers’ constraints and objectives combined with middlemen expectations result in partial adaptive capacity for farmers to choose crops to grow, dates to choose and volumes to reach. Two different strategies can provide farmers adaptive capacity: diversify or specialize, these strategies being applied to the number of crops grown or the number of outlets. Our results also show that adaptation requires various adaptive capacities depending on the disturbance faced. Our results, analysing farmers individual adaptive capacity, call for a broadening of focus to consider collective adaptive capacities involving middlemen and other farmers of supply basin.