In the backyard we currently have a small patio and a lot of lawn. We also have a toolshed, which seems to be sinking into the earth because there's no real foundation underneath it. We want to invest in some raised garden beds (bad knees and backs), something like this: https://eartheasy.com/deer-proof-cedar-complete-raised-garden-bed-kit-8-x-8-x-20/?sku=RB88-RB88DFO&gclid=CjwKCAiApNSABhAlEiwANuR9YHSoWLHjbkeiPow1wNVkBvU_oCism43bHMf0NSPmY8Rp3rDrWToCbxoCzTAQAvD_BwE
What should we put underneath it in order to prevent it from sinking into the earth or otherwise being damaged? Cement? Dig out some of the lawn and put in woodchips?
(Let me know if this belongs on gardening instead, I'm not sure)
Best Answer
Unless your soil is extremely sandy and wet you won't have to take precautions to prevent the garden beds from sinking. I would imagine the tool shed sinking due to the extra weight and foot traffic it endures regularly.
If you feel it necessary to take steps to keep the raised beds stable you can:
-level the beds by excavating under the high corners. This will keep the corner from moving.
-In addition with the excavating pound wooden stakes made from redwood or cedar at each corner. Leave 6-8 inches above ground and screw that section to the bed.
-This idea will help in 2 ways: attach 1/2 inch hardware cloth to the entire bottom of the bed. This will not only provide alot of surface area (drag/friction), but will prevent gophers and other burrowing critters from entering the bed.