Saturday, March 27, if you show up at the Backyard Nursery of Sarah and Catherine Schoeffler at about 9 a.m., you're likely to get a cup of coffee with your Louisiana iris. The gardens are beautiful, and the Schoeffler girls love to share the glories of spring with their friends and neighbors. Nobody is a stranger in this green grove. Plant sale March 27, 9 a.m. to 2 p.m., 3502 East Simcoe 288-0426 for directions.