In spite of the best of intentions, I am still hopelessly behind in answering my e- mail. I've gotten requests from as far away as California. I know that sourcing can be a problem, because the inventories at chain stores, including the big boxes, vary from location to location. Larger independent garden centers and nurseries usually carry a broader selection of plants and tools, so give them a call first. If you're looking for a product and the store carries the brand but not the particular item, they may special order it for you.
Many companies list retail locations by ZIP codes.
When shopping for plant material, talk to someone in charge of ordering the perennials, shrubs or trees. Seasonal help may be able to tell you if they have a plant in stock, but they won't be able to tell you if the store can order it. And consider a road trip to do some power plant shopping. There are wonderful nurseries and garden centers all over the state. If you're in search of a particular plant, call ahead.