Yacon · Nizhniy Novgorod, Nizhny Novgorod Oblast, Russia
When to plant yacon in Nizhniy Novgorod
Main outdoor window
10 May - 7 Jun
The window this page is built around.
Timed from last spring frost
3 May
In Nizhniy Novgorod, on your chosen risk.
Ready to pick
1 Oct - 30 Nov
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 Nizhniy Novgorod
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.
Plant rhizomes
10 May - 7 Jun
One week after your last frost.
Harvest
1 Oct - 30 Nov
Yacon through the year
Against the frost risk in Nizhniy Novgorod
Why these dates
Plant rhizomes after the last frost. Lift when the first frost blackens the tops, and store the crowns frost-free for replanting.
Top growth is killed at 0C. The tubers survive a light frost in the ground but not a freeze, so they are lifted promptly.
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. Yacon are timed with planting out 1 weeks after it, and this page simply resolves those offsets against the frost date computed for Nizhniy Novgorod.
Nizhniy Novgorod sits in zone 4a, which is colder than this crop is rated for, so it will need winter protection or a container that can be moved under cover. The dates below still describe the right time of year; the open question is survival rather than timing.
The median frost-free season here is 155 days, against 150 to 210 days to maturity for this crop counted from sowing. That margin is what decides whether a late sowing is worth attempting.
Also in Nizhniy Novgorod
Other vegetables to time
Growing yacon in Nizhniy Novgorod
When should I plant yacon in Nizhniy Novgorod?
Aim for 10 May - 7 Jun in an average year. If you would rather not gamble on the weather, wait until 26 May - 23 Jun - by then frost has finished in nine years out of ten.
When will yacon be ready to harvest in Nizhniy Novgorod?
Expect to start picking around 1 Oct - 30 Nov, based on 150 to 210 days to maturity from the planting date calculated for this location.
How much frost will yacon tolerate?
Top growth is killed at 0C. The tubers survive a light frost in the ground but not a freeze, so they are lifted promptly.