Turmeric · Brooklyn, New York, United States
When to plant turmeric in Brooklyn
Main outdoor window
12 Apr - 10 May
The window this page is built around.
Timed from last spring frost
29 March
In Brooklyn, on your chosen risk.
Ready to pick
1 Oct - 31 Dec
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
1 Feb - 1 Mar
Eight weeks before your last frost, under cover or on a windowsill.
Plant rhizomes
12 Apr - 10 May
Two weeks after your last frost.
Harvest
1 Oct - 31 Dec
Turmeric through the year
Against the frost risk in Brooklyn
Why these dates
Start rhizomes indoors eight weeks before the last frost in a warm place, and move outside two weeks after it. Lift when the foliage dies down, about nine months from planting.
Killed at 0C. In a short season the rhizomes will be small but perfectly usable, so an early lift is better than a frosted crop.
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. Turmeric are timed from 8 weeks before that frost for an indoor start, with planting out 2 weeks after 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 240 to 300 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 turmeric in Brooklyn
When should I plant turmeric in Brooklyn?
Aim for 12 Apr - 10 May in an average year. If you would rather not gamble on the weather, wait until 22 Apr - 20 May - by then frost has finished in nine years out of ten.
When will turmeric be ready to harvest in Brooklyn?
Expect to start picking around 1 Oct - 31 Dec, based on 240 to 300 days to maturity from the planting date calculated for this location.
How much frost will turmeric tolerate?
Killed at 0C. In a short season the rhizomes will be small but perfectly usable, so an early lift is better than a frosted crop.