Safe to Plant

Skirret · Moscow, Moscow, Russia

When to plant skirret in Moscow

Main outdoor window

7 Oct - 18 Apr

The window this page is built around.

Timed from last spring frost

2 May

In Moscow, on your chosen risk.

Ready to pick

1 Oct - 31 Mar

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 Moscow

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 offsets

7 Oct - 18 Apr

Any time the plant is dormant and the ground is neither frozen nor waterlogged: after leaf fall in autumn, or at the end of winter before growth restarts.

Harvest

1 Oct - 31 Mar

Frost tolerance
Very-hardy
Damaged below
-15°C (5°F)
First crop
Year 1
Hardy to
Zone 4a–9a
Min soil temp
7°C (44.6°F)
Spacing
30 cm
Sowing depth
10 mm (0.4 in)
Sun
Full

Skirret through the year

Against the frost risk in Moscow

Jan
Feb
Mar
Apr
May
Jun
Jul
Aug
Sep
Oct
Nov
Dec

Frost risk Plant Harvest Today

Why these dates

Plant offsets in early spring while dormant. Lift from the second autumn onwards, keeping a few crowns each time to replant, so the patch renews itself indefinitely.

Hardy to -15C and below. Roots are dug through winter and are sweeter after they have been frozen in the ground.

Skirret are planted once and then left in place, so there is no sowing offset to resolve. What matters in Moscow is the shape of the year: this crop is dormant through the winter and is planted while it sleeps, any time between leaf fall in autumn and the restart of growth in spring, so long as the ground is neither frozen nor waterlogged. That is why the window below spans the cold months rather than sitting in the middle of the growing season.

Hardiness is not the obstacle here. Moscow is zone 4b, comfortably inside the range this crop is rated for, so an established plant should come through an average winter without protection.

Do not expect a crop in the first year. A plant set out now should give its first worthwhile pick around year 1, and will then produce every year after that, which is what makes the planting decision worth getting right the first time.

See every crop timed for Moscow →

Growing skirret in Moscow

When should I plant skirret in Moscow?

Aim for 7 Oct - 18 Apr in an average year. If you would rather not gamble on the weather, wait until 23 Sep - 4 May - by then frost has finished in nine years out of ten.

When will skirret be ready to harvest in Moscow?

Expect to start picking around 1 Oct - 31 Mar, based on 150 to 200 days to maturity from the planting date calculated for this location.

How much frost will skirret tolerate?

Hardy to -15C and below. Roots are dug through winter and are sweeter after they have been frozen in the ground.