When to plant onion in Tharwa
- Sow in the ground: mid Sep to late JanTharwa area, temperate oceanic
Worked out from 30 years of climate records for Tharwa. Microclimates vary: frost hollows and hills run later.
A staple crop sown in autumn and winter in Adelaide and harvested in late spring and summer. Choosing the right type matters: onions bulb according to day length, so use short- or intermediate-day varieties suited to southern Australia. Keep beds weed-free, as onions hate competition.