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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!
Lathyrus latifolius (Mixed)
Everlasting Sweet Pea, Perennial Sweet PeaMore info
Asarina scandens 'Jewel Mixed'
Maurandya scandensSophisticated climber, masses of 1½in indigo to violet blue, pink or pure white flowers. Quick to bloom from an early sowing. Ideal for the cold greenhouse or conservatory. One of the longest flowering annuals, in bloom untill Christmas if there is no hard frost or in the greenhouse during winter. Climbs to 120-240cm (4-8ft). More info
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