2nd Year Maturity. Purple Palace heuchera seeds grow a vigorous Pacific Northwest favorite ideal for many moderate and humid gardens across the country. Purple Palace seeds boast one of the most tolerant and decorative perennials with their unique 3-5 inch iridescent-tinted leaves perfect for an exotic trim along walkways, fences, or filling out the flower bed. Heuchera is native to the tame winters along the Pacific and will provide year-round brilliance in similar climates. Purple Palace heuchera is easy to grow from seed and guarantees a unique and stunning ground cover for many residential and commercial spaces.