Mashua · Phnom Penh, Phnom Penh, Cambodia
When to plant mashua 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.
Mashua through the year
Against the frost risk in Phnom Penh
Why these dates
As for oca: the tops go at about -2C and the crop is lifted afterwards.
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. Mashua are timed with planting out 0 weeks after it, and this page simply resolves those offsets against the frost date computed for Phnom Penh.
Phnom Penh sits in zone 13a, which is milder than this crop wants, and a winter that never really arrives is its own problem. The dates below still describe the right time of year; the open question is survival rather than timing.
Also in Phnom Penh
Other vegetables to time
Growing mashua in Phnom Penh
How much frost will mashua tolerate?
As for oca: the tops go at about -2C and the crop is lifted afterwards.