I have squished them with my bare hands, blasted the nests open with a power hose, sprayed them with vinegar, burned them alive with a blow torch, and for those that survived all that, drowned them in soapy water. Yes, we are talking about tent caterpillars. Fair warning: this post is not for the faint of heart!
If you want to convert an old orchard to a self-sustaining food forest, start with the SOIL. Billions of creatures can live in a single teaspoon, all connected by miles of fungal mycelium. It's an entire universe beneath our feet. Prepare to be amazed.
Garlic Planting Conundrums, Part 2, in which we ask, where can you fit garlic in a permaculture landscape, what about companion planting with garlic, and what is the most efficient way to grow really great garlic?