Plant perennial and biennial flower seeds for an explosion of garden colour. Biennials last for two years, and perennials come back year after year. Sow these seeds in the spring (some varieties can be sown in autumn) in a nursery area or greenhouse. Want an even greater display? Choose your perennial and biennial seeds, then browse our hardy, half-hardy and shrub seeds. If you're looking for planting and care advice, take a quick look at our perennials hub page for expert tips.