When to plant
You can sow ripe seeds directly into the ground where you want them to grow, or store them in the fridge and sow them in the spring. Some say that allium seeds need to experience cold temperatures to germinate.
Where to plant
Choose a sheltered, sunny spot with well-drained soil. You can also plant alliums in a flower border with other perennials, annuals, or flowering bulbs to help disguise their yellowing foliage.
How to plant
You can sow seeds directly into the ground, or you can plant them in trays of gritty compost or potting soil: