Mast be spring.

Throughout the forest nature bursts into life, the Beech of Great Huntley Bank are festooned with flowers and young mast, the Beech grows both male and female flowers on the same plant, which is handy for its propagation.  In good years, come late summer/autumn, these boughs will hang heavy with mast or Beech nuts, now mostly forgotten these small triangular fruits were a useful crop well used by previous generations.