25 Seeds of Allium Giganteum - Giant Allium. Ornamental with 5-6 Inch Lilac-Purple Flower Heads

Germination Advice: Using a seed tray, sow Allium seeds at 60-68F, on the surface of a good quality seed compost then gently firm down. Keep the soil damp but not wet, and place the seed tray either in a propagator or seal the seed tray inside a polythene bag until after germination - which usually takes about 3 months. Make sure that the tray is placed in a bright position but out of direct sunlight. Giant ornamental onion seed needs a cold period in order to help break any seed dormancy before they can germinate and so if germination does not occur by the end of 3 months, transfer the container to a fridge (not freezer) at 40F for a further 3 months. Check regularly while in the fridge and remove once seeds start to germinate. You may need to repeat this cycle if germination does not occur as germination can often be erratic taking from 30-365 days to emerge!