Paul NZ I was unaware that gorse could ever be a problem till I visited NZ farming rellies some years ago and saw how it grows rampant there - generally confined to moorland in UK.
A nice doable Everyman - mainly 11a for me. I enjoyed the humour of 4d - made me chuckle. 3d is also rather fine as others have said - nice misdirect there.
For once I’m not needing any hints!