Zinnias are annual plants offering spectacular and long-lasting blooms. Often sown in borders and flowerbeds, Zinnias also hold up well in vases. The nectar-producing flowers attract many butterflies. These varieties have small, extra-double yellow flowers. Their stiff stems make them a prime choice for creating small bouquets. Height: 50 cm. Sowing: from February to May, protected from frost, place in a sunny position in fresh, well-drained soil. Flowering from June to August.