Is there a pad under the equipment? It looks like bare ground. Here’s what I would suggest -
- Get the equipment up on some concrete slabs, either precast or pour your own slab.
- Scrap any surround ground down to the dirt and apply a heavy dose of herbicide with pre-emergent.
- Cover the bare ground with Geotextile and layout a border with either decorative brick or plastic retaining terrace board.
- Fill the area around the slab and within the retaining board with 1/2” crushed landscape stone or smooth river stone.
Being able to keep the equipment up off the wet ground and away from over growth is a huge benefit to being able to work on the equipment easily. Doing it now is much easier than doing it later.