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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!
Bear's Breeches, Acanthus longifolius, Acanthus balcanicusThe handsome, glossy Acanthus leaves and dramatic flower spikes of this statuesque perennial add style and architecture to any border. Acanthus hungaricus has more compact, ornamental foliage than its better known cousin Acanthus mollis. This large, vigorous perennial makes a real statement in the garden, and an excellent cut flower too. Height: 120cm (48"). Spread: 75cm (30"). More info
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