Calendario del castagnajo (English: Chestnut grower's calendar) is a book by Florentine writer Marco Lastri, published in 1793.
(English: "Calendar of the chestnut grower, in which the monthly growth of the chestnut tree is described Written by Lastri, the book talks about how to grow the plant, which feeds the people of the countryside (though it has been neglected in Italy).
The introduction provides an overview of the importance of chestnut flour and its role helping people to survive.
In summary, the 13 volumes teach readers the methods of growing and harvesting a chestnut orchard by instructing which months are best for grafting, pruning and irrigation.
It includes information on chestnut-derived products: ink, flour, tables, baskets, coal and fodder.