ZINNIA

This daisy family (Asteraceae) genus of around 20 species of annuals, perennials, and small shrubs occurs naturally from the south-central U.S.A. to Argentina, with its center in Mexco. They have soft light green leaves that range from linear to broadly spat-ula-shaped, depending on the species. While the flowers of the wild species are typically daisy-like with conspicuous ray and disc florests, modern seed strains are mainly doubles with the central disc florests mostly hidden or absent. The color range is extensive, though mostly confined to the warm tones; yellow, pink, orange, and red to mahogany. The genus is named for Johann Gottfried Zinn (1727-1759), a botany professor at Gottingen University.

CULTIVATION

The cultivated plants are mostly frost tender summer anuals that should be grown in a sunny position sheltered from drafts. Moist well-drained soil is ideal, though they can withstand dry periods. Frequent deadheading is needed to prolong flowering. Propagate from seed. 

Top Tip

Most cultivars are derived from Zinnia elegans and z.haageana. Used warf froms to edge paths, and taller types at the back of flowerbeds.