Last Updated on: October 25, 2026

When to Plant Shallots in the UK: Autumn and Spring Planting Guide

The best time to plant shallots in the UK is usually early to mid-spring, although some varieties are suitable for autumn or winter planting. Your choice should depend on the planting instructions for your shallots, your local weather and how well your soil drains.

For many gardeners, March and April provide a straightforward planting window. Autumn planting can also work well, but only with suitable varieties and ground that will not remain waterlogged through winter.

Shallots are a useful crop for gardens and allotments because they take up relatively little space and have plenty of uses in the kitchen. Grown from sets, each planted bulb develops into a cluster of shallots that can be harvested during summer.

This guide explains when to plant shallots, how to choose between autumn and spring, and what to do when wet or cold weather delays your plans.

When Is the Best Time to Plant Shallots?

For shallot sets, early to mid-spring is the usual planting season. Some varieties can be planted in autumn or winter, but they must be suitable for that treatment. Avoid autumn planting in heavy ground prone to waterlogging. RHS Guide

Use the following calendar as a starting point, then check the instructions supplied with your planting material.

Planting method	General UK timing	What to check
Spring-planted sets	Usually March–April	Ground is workable and not saturated
Autumn-planted sets	Often October–November	Variety is recommended for autumn planting
Winter-planted sets	Only where recommended	Suitable variety and favourable soil conditions
Seeds started indoors	Late winter	Bright growing conditions after germination
Seeds sown outdoors	Mid-spring	Soil has warmed and drained
Seed-raised plants moved outside	Spring	Plants are hardened off and ground is suitable

These are flexible windows. A sheltered southern garden may be ready before an exposed Yorkshire allotment.

The condition of the ground matters more than planting on a particular date.

Shallot Sets or Seeds: Why the Difference Matters

Before deciding when to plant, establish whether you have sets or seeds.

Growing Shallots from Sets

Sets are small immature bulbs sold for planting. They offer a simple starting point, particularly for beginners.

A planted set normally produces a cluster of bulbs. You do not need to separate the set before planting.

Buy firm, healthy planting stock and avoid bulbs with soft patches, mould or obvious damage.

Growing Shallots from Seed

Seeds need a different timetable because plants must germinate and establish before developing bulbs.

They also behave differently from sets: each seed generally produces one bulb, so several seedlings grown together can form a harvesting clump.

Seed packets give variety-specific sowing guidance. Keep the packet until harvest so you can refer back to spacing and maturity information.

Neither method is automatically best for every gardener. Sets are convenient, while seeds can offer a wider choice and make it economical to raise more plants.

Planting Shallots in Autumn

Autumn planting is useful when you have suitable stock and a bed with reliable drainage.

It allows plants to begin establishing before spring and spreads some of the workload away from the busiest sowing months.

However, autumn planting does not guarantee larger bulbs or an earlier harvest. Winter conditions and the variety you choose still influence the result.

When to Plant Autumn Shallots

October and November are useful months to consider for stock labelled for autumn planting. Some suppliers recommend a wider window, so follow their instructions.

Plant while the ground remains workable. Avoid planting immediately before a forecast period of prolonged heavy rain if your bed already drains poorly.

When Autumn Planting Is Less Suitable

Consider waiting until spring if:

• Water regularly stands on the bed.
• Your soil stays sticky and saturated.
• The variety is labelled for spring planting.
• The planting area needs substantial preparation.
• You cannot provide a suitable alternative growing space.

A bed that looks manageable on a dry October afternoon may still become waterlogged in January. Think about its winter behaviour before committing your crop.

Planting Shallots in Spring

Spring planting is a practical option for many UK gardeners.

It avoids exposing newly planted sets to the wettest part of winter and gives you time to prepare the bed properly.

March and April are common planting months, but wait if the soil remains frozen or saturated.

Can You Plant Shallots in February?

Possibly, if the variety permits it and conditions are suitable.

On heavy or exposed ground, February may still be too wet or cold. There is little benefit in planting into poor conditions simply because sets have arrived.

Starting suitable sets in individual modules or small pots can provide a temporary solution while you wait for the bed to improve.

Can You Plant Shallots in April?

April is suitable for many spring-planted shallots.

Keep the planting area clear of weeds and check moisture as the weather becomes warmer. A dry spring can make establishment harder even when winter drainage was excellent.

Is May Too Late?

May is later than the preferred planting window for many varieties.

Late planting leaves less time to establish strong growth before summer bulb development. Check the supplier’s advice and keep expectations realistic.

If buying late, choose planting material specifically recommended for the remaining season rather than assuming any leftover sets will perform equally well.

Choosing a Planting Date for Your Location

Regional conditions can shift the best planting time.

In a mild, sheltered garden, the ground may become suitable relatively early. A windy allotment at higher elevation can remain colder and wetter.

For a Sheffield or Yorkshire plot, inspect the bed rather than following dates intended for the mildest parts of the country.

Ask yourself:

• Does the soil crumble or smear when handled?
• Has standing water drained away?
• Can I plant without compacting the bed?
• Is the site sunny?
• Is the planting stock suitable for this season?

If the soil sticks heavily to tools and boots, give it more time.

Prepare the Bed Before Planting

Choose a sunny position with fertile soil and good drainage.

Clear weeds, particularly perennial roots that will be difficult to remove once shallots begin growing.

Well-rotted organic matter can improve soil condition. Avoid placing fresh manure directly around the sets.

Prepare the surface so you can plant without forcing bulbs into hard ground. Shallots need firm contact with the soil, but the bed should not be compacted.

Leave sufficient access between rows for weeding. A slightly wider working space can be more useful than squeezing in an extra row that becomes difficult to maintain.

If the bed supported a poor or diseased allium crop previously, investigate the cause before planting more shallots there.

How to Plant Shallot Sets

Plant sets upright with their tips just showing above the surface.

Allow approximately 15–20cm between sets, with 25–30cm between rows, adjusting for the supplier’s recommendations and your growing system. RHS Guide

Planting Step by Step

1. Mark straight rows or individual planting positions.
2. Make a shallow planting hole.
3. Place the set with the rooting end downwards.
4. Draw soil around it, leaving the tip visible.
5. Firm gently without crushing the bulb.
6. Water if needed to settle dry soil.
7. Label the variety and planting date.

Do not peel the sets or cut them into pieces.

If birds lift newly planted bulbs, replant them promptly. A securely fitted protective cover can help during establishment; check it regularly.

Planting Shallots in Heavy Clay Soil

Clay soil can be productive, but winter drainage is often the main concern.

If the ground becomes waterlogged, spring planting is usually a more manageable choice than leaving sets in saturated soil throughout winter.

Raised beds or substantial containers provide alternatives where drainage remains unsuitable.

Avoid digging clay when it is very wet. Working it too early can damage the soil structure and make preparation harder later.

A small amount of grit in an individual planting hole will not solve drainage across a waterlogged bed. Address the wider growing conditions instead.

Starting Shallots in Pots Before Planting Out

Starting sets in modules can help when the outdoor planting window arrives before your soil is ready.

Use containers with drainage holes and suitable peat-free compost. Position the sets upright and water carefully.

Keep them in a bright, sheltered position and avoid excessive warmth, which can encourage growth that is difficult to manage.

Check regularly for roots emerging from the drainage holes. Plant out before the root system becomes severely restricted.

Acclimatise plants to outdoor conditions and move them with the root ball intact.

This is a way to manage a temporary delay, rather than a reason to keep plants in small modules for months.

Growing Shallots in Containers

Containers are useful for patios, small gardens and allotments with unsuitable soil.

Choose a pot with drainage holes and enough width to maintain sensible spacing. A broad container is particularly helpful because each set needs room to develop its cluster.

Use suitable peat-free container compost and place the pot in a sunny position.

Check moisture regularly. Containers can dry faster than beds, particularly as foliage develops.

Avoid leaving pots standing in water during wet weather. Successful container growing depends on balancing adequate moisture with free drainage.

Record how many sets you plant in each pot. At harvest, this helps you judge whether the spacing was practical.

Looking After Shallots After Planting

The first few weeks are about rooting and establishment.

Check that sets remain in place and remove weeds while they are small. Hand-weed close to plants to reduce the chance of damaging their shallow roots.

Water during dry spells, particularly while plants are growing actively. Avoid repeatedly soaking ground that is already moist.

Feeding should reflect soil fertility and plant condition. Follow fertiliser instructions and avoid assuming that more feed produces better bulbs.

A pale leaf may have several causes, including wet soil or cold conditions. Check the growing environment before adding another product.

As plants approach maturity, reduce unnecessary watering and allow the crop to ripen naturally.

Common Planting-Time Mistakes

Planting Every Variety in Autumn

Autumn suitability depends on the variety. Read the label before planting.

Planting into Saturated Ground

Poor drainage can undo the advantage of early planting. Wait or use a suitable alternative.

Burying Sets Too Deeply

Shallot sets are normally planted with the tip visible. Deep burial is unnecessary.

Crowding the Plants

Each set needs room for its developing cluster. Close planting can make weeding and harvesting more difficult.

Keeping Sets in Warm, Damp Storage

Before planting, keep stock in the conditions recommended by the supplier and inspect it regularly.

Starting Seeds Without Enough Light

Warmth may encourage germination, but young seedlings also need bright conditions and suitable care afterwards.

When Will Your Shallots Be Ready to Harvest?

Shallots are usually harvested in summer, although timing varies with variety, planting date and weather.

Watch for foliage naturally yellowing and falling over. Inspect the crop rather than expecting every planting to mature on the same date.

Lift carefully in suitable weather and avoid damaging the bulbs. Allow them to dry in an airy, sheltered place before storing.

Keep damaged bulbs separate for early use and check stored shallots periodically.

Recording planting and harvesting dates gives you a useful guide for future crops on your own plot.

Frequently Asked Questions

Is Autumn or Spring Better for Shallots?

Both can work. Spring suits many standard sets, while autumn planting requires suitable varieties and reliable winter drainage.

Can I Plant Shallots in November?

Yes, if the planting stock is recommended for autumn and the soil remains suitable. Avoid frozen or waterlogged ground.

Can I Plant Shallots from the Supermarket?

Purpose-grown planting stock is the more dependable option because its variety and planting recommendations are known.

Should I Separate a Shallot Set Before Planting?

No. Plant each sound set whole. It will develop its own cluster.

Do Newly Planted Shallots Need Water?

Water when needed to settle dry soil. Do not add water automatically to a wet bed.

Can Shallots Grow in Partial Shade?

A sunny position is preferable for productive growth. Choose the brightest suitable growing area available.

Choose the Right Window for Your Plot

Knowing when to plant shallots in the UK comes down to matching the variety with suitable soil conditions.

For many gardeners, March and April provide a straightforward starting point. Autumn planting offers another option where the stock is suitable and winter drainage is dependable.

Prepare the bed, give each plant room and keep a record of what you planted. Those simple details make it easier to improve each season.

Keep smiling, keep shining, keep gardening with Ben.