Cowpea · Phnom Penh, Phnom Penh, Cambodia
When to plant cowpeas in Phnom Penh
Main outdoor window
not outdoors here
The window this page is built around.
Timed from last spring frost
no spring frost
In Phnom Penh, on your chosen risk.
First autumn frost
no autumn frost
The far end of the outdoor season.
The average last frost. Half of all years are later than this.
Step by step in Phnom Penh
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.
Cowpeas through the year
Against the frost risk in Phnom Penh
Why these dates
Sow two weeks after the last frost once soil is genuinely warm. Cowpeas grow fast enough in heat to be sown as a second crop after an early harvest.
Tender at 0C, with no useful frost tolerance at either end.
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. Cowpeas are timed for direct sowing 2 weeks after it, and this page simply resolves those offsets against the frost date computed for Phnom Penh.
Also in Phnom Penh
Other grains to time
Growing cowpeas in Phnom Penh
How much frost will cowpeas tolerate?
Tender at 0C, with no useful frost tolerance at either end.