Sowing
Sow 3–4 seeds per plug indoors in January. Plant out as a clump — don't thin it out. Harvest-thin instead as they grow.
Methods
From sets (planted direct, April)
Plant sets directly outside in April, tips just showing, 10–15 cm apart. Water when needed.
From the log
Grows well with
Petunia 
Swiss chard 
Carrot 
Turnip 
Yellow onion 
Parsley 
Black salsify 
Parsnip 
Beetroot Get the complete guide
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Do's and don'ts — what worked, what I'd skip next time, and the mistakes worth avoiding.
Full sow, transplant and harvest calendar for red onion.
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A friendly reminder: every garden plays by its own rules. Zones, soil, weather and a hundred small things decide what works — so this is how I did it and what worked for me, not a promise. Try, learn, adjust, try again.. that's half the fun anyway.