Oca · Rabat, Rabat-Salé-Kénitra, Morocco
When to plant oca in Rabat
Main outdoor window
not outdoors here
The window this page is built around.
Timed from last spring frost
no spring frost
In Rabat, 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 Rabat
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.
Oca through the year
Against the frost risk in Rabat
Why these dates
Plant tubers after the last frost. Do not lift until several weeks after the tops are frosted - almost all the crop forms in that final window, and digging early gets nothing.
Foliage is killed around -2C, but tuber formation happens in the weeks just before and after that. In short-season climates a fleece over the plants buys the time the crop needs.
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. Oca are timed with planting out 0 weeks after it, and this page simply resolves those offsets against the frost date computed for Rabat.
Rabat sits in zone 11b, 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 Rabat
Other vegetables to time
Growing oca in Rabat
How much frost will oca tolerate?
Foliage is killed around -2C, but tuber formation happens in the weeks just before and after that. In short-season climates a fleece over the plants buys the time the crop needs.