Mullein (Verbascum Thapsus) is a biennial herb grown for its tall candle-like spikes of yellow flowers and its large, soft, felted leaves. In the first year, it stays low and forms a broad rosette close to the ground; in the second, it sends up a flowering stalk that usually reaches about 4 to 6 feet tall. Bloom time typically runs from June to September. It is suited to USDA Zones 3–9, which makes it a practical choice for a wide range of U.S. gardens. For gardeners looking to buy organic mullein seeds, this is one of those old heirloom plants that still earns its space.
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