Hibiscus Seeds - Luna Series70 84 days. Luna Series hibiscus seeds promise robust and long lasting blooms to your garden when other flowers can not. Luna Series seeds grow vigorous, frost hardy hibiscus that thrives in a wide range of cool and well shaded North American gardens. Luna Series seeds are quick to mature into durable 24 36 tall bushy uprights dazzling with enormous 6 8 5 pedaled hibiscus blooms in a signature choice of Pink Swirl, Red Improved, Rose, White, and Mix.