In the middle of garden is a giant Ceanothus which over the years had attracted bees all summer. However, it got so large that it dominated much of the space we have. The environmentalist in me liked the bees, but wasn't keen on the lack of light for everything else.
After the very wet winter I noticed there weren't new leaves growing, apart from on a lower section where part of the bush/tree had snapped a few years previously. Investigation showed the main trunk had cracked, with a few new shoots growing near the crack.
So ... I've chopped back the branches, cut down the snapped trunk to let the new shoots grow and the garden has been opened up.
Hopefully what were muddy/mossy sections of lawn will now grow better as a result. And the new growth can keep attracting bees, albeit less of them.