Spinach · The Bronx, New York, United States
When to plant spinach in The Bronx
Main outdoor window
4-18 Mar
The window this page is built around.
Timed from last spring frost
15 April
In The Bronx, on your chosen risk.
Ready to pick
13-23 Apr
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 The Bronx
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
11 Aug - 1 Sep
Counting back 64 days from your first frost so the crop matures in time.
Sow direct
4-18 Mar
Six weeks before your last frost.
Harvest
13-23 Apr
Spinach through the year
Against the frost risk in The Bronx
Why these dates
Spring sowings must go in early - six weeks before last frost - to crop before bolting. The autumn sowing, six to eight weeks before first frost, is usually far more productive.
Overwinters under snow in zone 5 and regrows in spring. One of the few crops that genuinely prefers frost.
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. Spinach are timed for direct sowing 6 weeks before it, and this page simply resolves those offsets against the frost date computed for The Bronx.
The median frost-free season here is 203 days, against 40 to 50 days to maturity for this crop counted from sowing. That margin is what decides whether a late sowing is worth attempting.
Also in The Bronx
Other vegetables to time
Growing spinach in The Bronx
When should I plant spinach in The Bronx?
Aim for 4-18 Mar in an average year. If you would rather not gamble on the weather, wait until 13-27 Mar - by then frost has finished in nine years out of ten.
When will spinach be ready to harvest in The Bronx?
Expect to start picking around 13-23 Apr, based on 40 to 50 days to maturity from the planting date calculated for this location.
How much frost will spinach tolerate?
Overwinters under snow in zone 5 and regrows in spring. One of the few crops that genuinely prefers frost.