In the end I did not bring up any new plants or soil. I spent my time figuring out wether or not to keep the black caterpillars on both wormwood and my rose bush. Now that I'm trying to build an favorable ecosystem for beneficial insects, esthetics of plants is not my only interest. Some plants serve as hosts to the larvae of Moths and Butterflies. Sometimes that is enough.
I also weeded the garden. It's hard for me to destroy any plants that finds it's way in my domain. I realize now that I have a panoply of Shepherd's Purse, Purslane, Polygonum persicaria and Chikweed. So I moved some unwanted plants to either the compost pile, under a rock or ate them.
