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Biennials live for 2 years, whereas perennials live for longer. As a general rule, biennial and perennial seeds should be sown in spring, but some can be sown in autumn as well. Many varieties will self-seed after flowering, giving you even more plants!
Hibiscus moscheutos 'Disco Sun Belle Mixed'
Common Rose Mallow, Swamp Rose MallowSpectacular dinner plate-like blooms (23cm/9in diameter) are produced in an impressive mixture of rich colours approximately 4½ months after sowing. Perfect for creating interest in borders, or grown in large pots on the patio or in a conservatory. Height: 50-80cm (20-32in). More info
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