sun - partial shade
acid - neutral - alkaline
Allium is a genus in the family Alliaceae. The genus includes onions grown for food, but also a number of decorative garden plants. It is a very large genus with close to 1000 species, most of which are native to the temperate regions of the northern hemisphere.
Bulbs planted in autumn.
Division in spring.
Seed – needs cold stratification, best sown in September - November.
Seed just covered and stored for 2-4 weeks at 20°C (68°F) and then it‘s moved outside until germination. Germination can be slow, seed may germinate a year later, so it‘s important not to throw it away prematurely. Optimum germination temperature is 5-12°C (40-55°F).
A low growing ornamental onion with nodding clusters of rather large, mauve-pink flowers. The species name
refers to Insubria, which is an ancient name for the area around Milan. Hardy and easy to grow.