If I do grow alliums from seed, I add sand or vermiculite to the sowing mix to improve drainage. Allium seed requires stratifying before it will germinate. Afterwards, keep the seed mix moist, and in the dark at between 13 and 160 C until the seeds germinate. Fertilizing the seedling bulbs during the first couple of growing seasons will allow them to develop strong bulbs. I have grown a fair number of species, and those I describe below are among my favourites.
Leaves are narrow and three-cornered which wither by flowering time.
This species looks best if planted en masse in a sunny, well-drained site. It is one of the most commonly grown species. Two to three leaves are produced by each bulb. These reach about 20 cm in length, and they sheath the lower one third of the flowering stem which reached 30 cm in height. It bears sweetly scented, bell-shaped, yellow flowers in a hemispherical umbel.