The Sheriff of Nottingham proclaims 2025 a Mast Year here in Sherwood Forest (and beyond) What is a mast year?? It’s a year when tress like oaks produce a significantly larger crop of their seeds like acorns or fruits in normal years. A mast year is a natural phenomenon which happens typically every 3-5 years. The crop of their fruits or nuts is known collectively as "mast". It is a survival strategy for the plants. Recently we have seen very few acorns but this year is a massive bumper crop. Th