Shallot · Louisville, Kentucky, United States
When to plant shallots in Louisville
Main outdoor window
2-23 Mar
The window this page is built around.
Timed from last spring frost
13 April
In Louisville, on your chosen risk.
Ready to pick
31 May - 30 Jun
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 Louisville
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 for overwintering
27 May - 17 Jun
Counting back 134 days from your first frost so the crop matures in time.
Sow direct
2-23 Mar
Six weeks before your last frost.
Harvest
31 May - 30 Jun
Shallots through the year
Against the frost risk in Louisville
Why these dates
Plant sets six weeks before the last frost, or in autumn in mild-winter regions for an earlier and larger crop. Push them in rather than burying them - the tip should be just visible.
Sets and young growth take -12C easily. Autumn-planted shallots overwinter through most temperate climates without protection.
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. Shallots are timed for direct sowing 6 weeks before it, and this page simply resolves those offsets against the frost date computed for Louisville.
The median frost-free season here is 199 days, against 90 to 120 days to maturity for this crop counted from sowing. That margin is what decides whether a late sowing is worth attempting.
Nearby
Shallots in places close by
Also in Louisville
Other vegetables to time
Growing shallots in Louisville
When should I plant shallots in Louisville?
Aim for 2-23 Mar in an average year. If you would rather not gamble on the weather, wait until 13 Mar - 3 Apr - by then frost has finished in nine years out of ten.
When will shallots be ready to harvest in Louisville?
Expect to start picking around 31 May - 30 Jun, based on 90 to 120 days to maturity from the planting date calculated for this location.
How much frost will shallots tolerate?
Sets and young growth take -12C easily. Autumn-planted shallots overwinter through most temperate climates without protection.