A good source for flavor for your fantasy campaign is knowing the agriculture calender. While most folks know about the spring plowing and planting as well as the fall harvest it would interesting to know how the rest of the months went.
Andy Staples over at the Penultimate Harn site has come up with a great summary of the agriculture year for medieval farming.
Playing with DnD5 Characters - 6th level Cleric
2 hours ago