Rosemary I can understand - mediterranean plant, hot summer, bursting
into flower as the weather gets cooler and wetter .... but Forsythia????
(1)

And I saw a rhododendron in flower in Ilkley today

(1) in case anyone asks - no, it wasn't winter jasmine - that has more
petals, paler flowers, and (for me) has been out since October. The
forsythia is only just coming into bloom.
--
Kay