The potato onion (also known as an Egyptian onion, underground onion
or multiplier onion)
is a group of varieties
from ''Plants For A Future'' which
Maud Grieve calls
''Allium'' × ''proliferum''[ but has also been classed in the Aggregatum Group of ''Allium cepa'', similar to the ]shallot
The shallot is a botanical variety (a cultivar) of the onion. Until 2010, the (French red) shallot was classified as a separate species, ''Allium ascalonicum''. The taxon was synonymized with ''Allium cepa'' (the common onion) in 2010, as the d ...
.[ It sometimes produces irregular-shaped][ or round ]bulb
In botany, a bulb is structurally a short stem with fleshy leaves or leaf basesBell, A.D. 1997. ''Plant form: an illustrated guide to flowering plant morphology''. Oxford University Press, Oxford, U.K. that function as food storage organs duri ...
s,[ which in some old English varieties may be large,][ although others may be less so.][
It is planted from bulbs, not from seed.][ It should be planted in the fall to early spring.][ Sources differ about planting depth, some saying shallow planting is appropriate and others calling for deeper planting.][
]
References
External links
Onion cultivars
Perennial vegetables
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