Stock Mix, Perfume Plant Gillyflower Night Scented, 40seeds 40 seeds - Stock Mix, Perfume Plant Gillyflower Night scented. Who would not want this lovely mix of colors growing in their garden? Grown from Stock seeds, this mix of brilliant colors brings the added benefit of having a sweet, spicy aroma. Butterflies will not leave Matthiola Stock alone, and your garden will receive a lot of admiring gazes. Usually Stock flowers are grown as annuals; however, they can grow as perennials in frost free zones or in areas that get very light frosts. Garden Stock flowers prefer cooler summers, so they do very well in coastal climates. In warm winter regions, set out Stock plants in the fall for winter blooms.