How accessible is this by wheelchair or motorized scooter? Is there parts to it that are...or much of it....or most stairs etc?

Entrance to the garden is wheelchair accessible does have some stairs and gravel pathways . Some pathways are more steep than others but worth checking out 😊

Yes, it is wheelchair accessible.

Motorized scooter or wheelchair should be just fine, there aren't any stairs.

If I remember correctly there are no stairs but the trail is steep in many places.