Hugelkultur method

Hello redditers,

I am trying to fill a raised garden bed to plant some veggies. Thinking of using the hugelkulture method but I don’t really have any compost/ green waste.

The plan is:

Base: tree logs and branches, toilet rolls (?) Mid: organic matter – this is what I don’t have, can I use mulch or mushroom compost/ cow or chicken manure? Top: Potting mix

Any advice would be very much appreciated!! Thank you.