Chrysanthemum Incurved Mixed Chrysanthemum 'Incurved Mixed' Half-hardy Perennial Sturdy stems bear rounded blooms, perfect for long-lasting flower arrangements. This vibrant collection will reward you with blooms right through until the frosts. Disbudding the stems will produce fewer, but larger blooms, or let them grow naturally for a mass of smaller flowers. Height: 90cm. Spread: 45cm. Companion planting: Try growing Chrysanthemums with chives, whose aromatic leaves will deter aphids.