When to plant onions in the winter in 2026: the timing for Siberia and beyond

Winter planting gives a harvest earlier than spring: bulbs have time to take root before frost, and with heat immediately go into growth. Plus - less problems with the onion fly, because by its activity the plants have already become stronger.

The main rule is not the calendar, but the weather.

When to plant: benchmark for temperature

The daily temperature is +5 ... +7 ° C. Soil at a depth of 5 cm - about +5 ° C. From planting to freezing the ground should take two or three weeks: this is enough for rooting, but not for growth.

Before the deadline, the onions will germinate and freeze. Later - will not have time to take root and will suffer from thaws and frost.

Watch the forecast for two to three weeks ahead. Warming promises - postpone landing.

Timetable by region

Siberia, northern Urals - September 15 - October 5 The benchmark is sustained cooling. In Siberia, the planting should be covered: with severe frosts and small snow, the onion freezes out.

Middle Ural, North of the European part - October 1-20.

Middle lane, Moscow region - the second half of October - early November.

North-West, Leningrad region - October, the site should be well drained.

Southern regions - late October - November.

How to prepare a bed

The place is sunny, elevated, without stagnation of water. Lowlands and heavy soil are not suitable: the onions will grind or rot.

Crop rotation: good predecessors - tomatoes, cucumbers, legumes, early potatoes, cabbage, squash, siderates. After garlic and onions, you can't. Return the bow to the old place in three to four years.

The garden is prepared in a month. Per square meter: 5-6 kg of humus or compost, 10 g of potassium sulfate, 20 g of superphosphate. Fresh manure, no.

How to plant

Dry land. No watering. Do not soak or trim bulbs.

Scheme: between bulbs 8-10 cm, between rows 15-20 cm Depth - 5-7 cm.

With the first frosts - mulch: dry leaves, lapberry, coniferous fall.

Varieties

General list: "Radar", "Danilovsky", "Senshui", "Shakespeare", "Sturon", "Ellan", "Arzamassky", "Bessonovsky", "Strigunovsky".

For Siberia and the Urals - "Senshui Elou Glob", "Radar", "Arzamassky". "Radar" - with additional mulching.

For the middle band - "Shakespeare", "Radar", "Bessonian", "Ellan".

For the south - "Danilovsky", "Strigunovsky", "Carmen".

What you can't do

Plant onions two to three weeks before stable frosts, at a daily temperature of +5 ... +7 ° C. The garden is sunny and without stagnation of water. Depth 5-7 cm, mulch after frost. Choose varieties for your region - and the harvest will be earlier than the neighbors.