The vegetable garden in January: what to prepare, plant, or postpone?

Deciding on tasks based on the plot

Before taking out your tools, observe the soil from the paths and check the local forecast. If it is frozen or waterlogged, postpone its preparation: the RHS advises against working the soil in either of these conditions. A mild day is not enough to make a bed still saturated with water workable.

The following table provides options for a vegetable garden in metropolitan France. It does not set a uniform start date for all gardens.

Planting possibilities are based on the SNHF garlic fact sheet, and early sowings on the late January calendar from Terre vivante. In mild climates, still verify the soil and the night-time forecast; in cold areas, preparatory work may remain the main focus.

Which garlic to plant in January?

The advice to “plant garlic” requires clarification. The SNHF distinguishes, in particular, pink garlic that produces a flower stalk, known in French as “à bâton” or “alternatif”, to be planted from early December to late February, and pink garlic without a flower stalk, from early January to late March. These guidelines do not automatically extend the planting period for white and purple autumn garlic.

Identify the type offered and its planting period. Choose a sunny area that does not retain water in winter. If the soil remains frozen or waterlogged, wait and then recheck the variety’s planting window. Our garlic guide details how to plant cloves.

What can you sow under cover?

For the second half of January, Terre vivante lists early radishes and carrots suitable for forcing in a heated growing space. Prepare these sowings under cover, according to the crop’s requirements and local conditions.

Before starting, check the variety’s instructions and the actual conditions in your setup. The term “greenhouse” alone does not indicate night-time temperatures. If you do not have the necessary conditions, keep the seeds for a more suitable time.

Under a small cover, monitor the soil and water as it dries; ventilate during the mildest hours. These steps are also included in the Terre vivante calendar. They require monitoring: putting up a cover does not mean the seedlings can be left unattended. The unheated greenhouse guide helps organise ventilation and monitoring, without treating an unheated greenhouse as a heated one.

Monitoring winter crops and their protective covers

The early January calendar mentions leeks, cabbages, lamb’s lettuce, and parsnips among the month’s harvests. This involves harvesting already established crops, based on their presence and condition in your garden, without confusing January harvests with January sowings.

For plants under cloches or small tunnels, check the fixings after wind and keep openings accessible. The RHS emphasises the need for secure anchoring and sufficient ventilation to limit excess humidity and the diseases it promotes.

Fleece can provide partial protection but does not guarantee frost-free conditions. The RHS notes that, without solar heat input, the temperature under cover can quickly match the outside air temperature. Adjust protection based on the current crop and expected cold.

Preparing for spring without sowing every crop in pots

January is a good time to review what occupied each bed the previous year, as suggested by Terre vivante. From this review, create a simple vegetable garden plan: existing crops, available areas, and intended locations.

For each desired sowing, then note the variety, the period indicated on the packet, the necessary conditions, and where the plants can be planted out. This gives you a list of decisions to prepare, without immediately sowing every crop you would like to grow.

For tomatoes, work back from the planned planting-out date: the SNHF advises waiting until frosts are no longer a risk before planting out and notes the plant’s sensitivity to cold. A January sowing is therefore not a default starting point for an outdoor vegetable garden. The tomato sowing guide helps you choose a schedule that also allows for the crop’s later growth.

If you are starting your first vegetable garden this month, this selection and observation work is enough to prepare for the season. The harvesting and protective measures described here do not apply if you have no crops growing yet.