Have you ever opened a seed packet only to discover that the seeds inside are an unnaturally brilliant color? Fluorescent pink, perhaps? Organic gardeners, beware: The dye is your warning that the seeds have been treated with synthetic fungicides. Most of us wouldn't want to handle seeds laced with toxic chemicals, much less eat the crops grown from them. Here is a short list of a few of our favorite suppliers you and your garden can trust: Baker Creek Heirloom Seed Co., W. Atlee Burpee & Co., Fedco Seeds, High Mowing Organic Seeds, Johnny’s Selected Seeds.