We've just moved house, and left behind a house with an 80ft garden. It was lovely!
We took all of the garden storage, all the pots except one (huge and ceramic). We left features such as the veg bed and bean supports (bottom of the garden), stone bird bath.
In addition, we left the large parasol with base. In hindsight we should have had it removed.
The buyers are being really difficult saying we left lots of garden items behind, that they're having to get a skip at almost £300 to clear the garden.
IMO they're taking the piss. It's a large garden with lots of features. I had assumed that the large pot would be left as it's too heavy to lift with the plants and soil in, and it forms part of the garden.
Every house I've moved into has had significantly more garden pots etc left behind - I actually felt bad about taking every single plant pot bar the large one.