Cucumber · Renca, Santiago Metropolitan, Chile
When to plant cucumbers in Renca
Main outdoor window
28 Sep - 12 Oct
The window this page is built around.
Timed from last spring frost
14 September
In Renca, on your chosen risk.
Ready to pick
17 Nov - 7 Dec
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 Renca
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.
Start indoors
24 Aug - 7 Sep
Three weeks before your last frost, under cover or on a windowsill.
Sow direct
28 Sep - 12 Oct
Two weeks after your last frost.
Plant out
28 Sep - 12 Oct
Two weeks after your last frost.
Harvest
17 Nov - 7 Dec
Cucumbers through the year
Against the frost risk in Renca
Why these dates
Only three weeks indoors: cucumbers hate root disturbance, so sow into modules or pots you can plant whole. A second sowing three weeks after the first extends picking by a month.
Cold soil rots cucumber seed before it germinates. If soil is below 18C, wait - the seed is cheaper than the fortnight you would lose.
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. Cucumbers are timed from 3 weeks before that frost for an indoor start, with planting out 2 weeks after it, and this page simply resolves those offsets against the frost date computed for Renca.
The median frost-free season here is 265 days, against 50 to 70 days to maturity for this crop counted from sowing. That margin is what decides whether a late sowing is worth attempting.
Also in Renca
Other vegetables to time
Growing cucumbers in Renca
When should I plant cucumbers in Renca?
Aim for 28 Sep - 12 Oct in an average year. If you would rather not gamble on the weather, wait until 19 Oct - 2 Nov - by then frost has finished in nine years out of ten.
When will cucumbers be ready to harvest in Renca?
Expect to start picking around 17 Nov - 7 Dec, based on 50 to 70 days to maturity from the planting date calculated for this location.
How much frost will cucumbers tolerate?
Cold soil rots cucumber seed before it germinates. If soil is below 18C, wait - the seed is cheaper than the fortnight you would lose.