Hydroponics House, Royal Oak

With more than 3,000 products in stock and learned clerks, Organic America infuses would-be green thumbs with the supplies and skills to bolster indoor and outdoor gardens. The staff, which includes professional farmers and retired Swamp Things, educates clientele with seminars and in-store conversation. Weekly workshops detail the essential techniques necessary for successful organic or hydroponic harvests, including crop rotation and biological pest control. Behind the store's low-slung façade, verdant displays show the life cycle of healthy plants as they mature from seeds to flowers and eventually to parade floats.