KENNETT SQUARE — Kathi Lafferty just might have stumbled on, or stumbled through, the pet rock of the new millennium: Kennett Square Potpourri. Packaged in a 2-inch clear green glass jar with a cork in the top, the “potpourri” is 1 ounce of mushroom substrate, an enticing mix of straw, horse manure, hay, poultry manure, […]
