Zinnia are from the sunflower and daisy families. They come in a variety of colours (pinks, yellows, whites and oranges) and have really stunning, bright flowers. Zinnia are native to South America and like most bedding plants they thrive in hot and dry conditions. Once they get going they are a fantastic plant for a hot British summer and will reach around 30cm's tall.
Protect these plants from frost and stake them up to support the lovely flowers when they get taller. Fertilise and dead head after a month or so to ensure they continue flourishing.