Le Potager du Paresseux : greffer les tomates - une bonne idée ? ou pas ? Ma réponse !

At the end of April, I presented my tomato grafting experiment and the reasons that led me to test this technique... The time has come to conclude, based on the results obtained... And to ask a few additional questions: what makes tomatoes turn red? Why can the tomatoes burn, but not the leaves, which are generally more exposed? [re-edited version]