BBCH-scale (bulb vegetable)

The BBCH-scale (bulb vegetable) identifies the phenological development stages of the bulb vegetables ((Onion = Allium cepa, leek = Allium porrum, garlic = Allium sativum, shallot = Allium ascalonicum auct). It is a plant species specific version of the BBCH-scale.

A downloadable version of the BBCH Scales, including illustrations, is available from the BBA  (Federal Biological Research Centre for Agriculture and Forestry)

1 Seed sown 2 Onion sets, shallot and garlic 3 For onions, garlic 4 For leek