"Swings" comment about building worm compost boxes brought back
memories.

My father was an avid fisherman.

A low cost source of worms was a must.

His solution was to build a worm compost pile by adding just coffee
grounds to the clay soil.

Took a couple of years, but the combination of worms and coffee
grounds turned that clay sub soil into sandy loam.

BTW, no need to dig for worms.

A couple of metal rods stuck into the ground and a source of 120 VAC
would "tickle" the worms right out of the ground.

Memories.

Lew