Welsh onion · Tula, Tula Oblast, Russia
When to plant welsh onions in Tula
Main outdoor window
5-26 Apr
The window this page is built around.
Timed from last spring frost
3 May
In Tula, on your chosen risk.
Ready to pick
1 Apr - 31 Oct
If you plant at the start of the window.
The average last frost. Half of all years are later than this.
Step by step in Tula
Each window is a range, not a single day. Earlier in the range buys you a longer season; later in it buys you a safer one.
Sow direct
5-26 Apr
Four weeks before your last frost.
Plant out
17 May - 7 Jun
Two weeks after your last frost.
Harvest
1 Apr - 31 Oct
Welsh onions through the year
Against the frost risk in Tula
Why these dates
Very hardy, to -20C, and one of the first alliums to grow again in spring.
Seed packets and extension guides express timing as weeks either side of the last spring frost, because that is the only reference point that travels. Welsh onions are timed with planting out 2 weeks after it, and this page simply resolves those offsets against the frost date computed for Tula.
Hardiness is not the obstacle here. Tula is zone 4b, comfortably inside the range this crop is rated for, so an established plant should come through an average winter without protection.
Do not expect a crop in the first year. A plant set out now should give its first worthwhile pick around year 1, and will then produce every year after that, which is what makes the planting decision worth getting right the first time.
Also in Tula
Other vegetables to time
Growing welsh onions in Tula
When should I plant welsh onions in Tula?
Aim for 5-26 Apr in an average year. If you would rather not gamble on the weather, wait until 20 Apr - 11 May - by then frost has finished in nine years out of ten.
When will welsh onions be ready to harvest in Tula?
Expect to start picking around 1 Apr - 31 Oct, based on 80 to 100 days to maturity from the planting date calculated for this location.
How much frost will welsh onions tolerate?
Very hardy, to -20C, and one of the first alliums to grow again in spring.