Annual plants with very conspicuous, funnel-shaped, unfortunately easily damaged by rain. The modern Fi hybrids are stronger, but their colours are rather harsh.
Ideal for window-boxes, especially when protected by a roof overhang, so that the flowers are kept out of the rain. It is advisable to install asystem.
In containers and window-boxes use standardsoil.
Sow from late winter onwards under glass,once, keep warm and do not move the plants outside until late spring. Cuttings may be taken in summer.
Petunia hybrids: Height 15-50 cm; flowering season in summer. There are small-flowered, large-flowered and fringed strains, each category embracing single and double forms. Unlimited colour variety.