Celtuce · Brooklyn, New York, United States
When to plant celtuce in Brooklyn
Main outdoor window
15 Mar - 5 Apr
The window this page is built around.
Timed from last spring frost
29 March
In Brooklyn, on your chosen risk.
Ready to pick
1 Jun - 30 Sep
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 Brooklyn
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.
Start indoors
15 Feb - 8 Mar
Six weeks before your last frost, under cover or on a windowsill.
Sow direct
15 Mar - 5 Apr
Two weeks before your last frost.
Sow direct
15 Mar - 5 Apr
Two weeks before your last frost.
Harvest
1 Jun - 30 Sep
Celtuce through the year
Against the frost risk in Brooklyn
Why these dates
Sow from two weeks before the last frost. Unlike a leaf lettuce you want this one to run up, so bolting weather is working in your favour.
Takes about -3C, the same as any lettuce, and the stem is no hardier than the leaf.
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. Celtuce are timed from 6 weeks before that frost for an indoor start, with planting out 2 weeks before it, and this page simply resolves those offsets against the frost date computed for Brooklyn.
The median frost-free season here is 249 days, against 70 to 90 days to maturity for this crop counted from sowing. That margin is what decides whether a late sowing is worth attempting.
Also in Brooklyn
Other vegetables to time
Growing celtuce in Brooklyn
When should I plant celtuce in Brooklyn?
Aim for 15 Mar - 5 Apr in an average year. If you would rather not gamble on the weather, wait until 25 Mar - 15 Apr - by then frost has finished in nine years out of ten.
When will celtuce be ready to harvest in Brooklyn?
Expect to start picking around 1 Jun - 30 Sep, based on 70 to 90 days to maturity from the planting date calculated for this location.
How much frost will celtuce tolerate?
Takes about -3C, the same as any lettuce, and the stem is no hardier than the leaf.