Sweet pea · Zapopan, Jalisco, Mexico
When to sow sweet peas in Zapopan
Main outdoor window
3-24 Aug
The window this page is built around.
Timed from last spring frost
no spring frost
In Zapopan, on your chosen risk.
First autumn frost
26 December
The far end of the outdoor season.
The average last frost. Half of all years are later than this.
Step by step in Zapopan
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
3-24 Aug
Counting back 124 days from your first frost so the crop matures in time.
Sweet peas through the year
Against the frost risk in Zapopan
Why these dates
Sow in autumn and overwinter in a cold frame in zone 6 and warmer, or start ten weeks before last frost. Pinch at four true leaves.
Young plants take -8C and benefit from the cold. This is a flower where autumn sowing genuinely doubles the season.
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. Sweet peas are timed from 10 weeks before that frost for an indoor start, with planting out 4 weeks before it, and this page simply resolves those offsets against the frost date computed for Zapopan.
Nearby
Sweet peas in places close by
Growing sweet peas in Zapopan
How much frost will sweet peas tolerate?
Young plants take -8C and benefit from the cold. This is a flower where autumn sowing genuinely doubles the season.