Hello /diy/ers
Some stupid asshole put a box garden bed under my windows.
Now I need to paint the wooden window frames because the paint is only hanging on due to goodwill.
The garden bed is 20cm high(ground level-up) and 53cm wide (from wall to edge of garden bed)
I can orient the ladder in either direction, but either way only 1/2 of the ladder legs will be in the garden bed.

What can I build or do to support the ladder over the void?

The top of the window is 2.5m off the ground so I need to be able to reach it