Everlasting onions (Allium perutile)
Everlasting Onions
(Allium perutile)
The clue is in the name really, the everlasting onion
will provide salad onions pretty much all year round, so long as you don't go mad...
One of the most useful members of the perennial onion tribe, everlasting onions need almost no attention. Essentially like a large chive, but instead of flowering they continue dividing to make new small onions, which means they can provide salad type onions pretty much all year round.
They are more than happy in any reasonable garden soil and a good bit of sun, just keep the worst of the weeds at bay and divide regularly for new plants and your salad bowl.