How to Grow Shallots: Planting & Harvest

Shallots are the gourmet cousin of the onion: milder, sweeter, with a faint garlic undertone that chefs prize and grocery stores price accordingly. The good news for the home gardener is that they are arguably easier to grow than bulb onions, surprisingly hardy, and they multiply — plant one small set in fall and dig up a fat clump of four to eight bulbs the following summer. That multiplication, plus their excellent storage life of six to eight months, makes shallots one of the highest-value crops you can give a square foot of bed to. This guide covers the two ways to grow them (sets and seed), exactly when and how deep to plant, how to space, water and feed them, and the curing process that lets a single harvest stock your kitchen most of the year.

Sets vs. Seed: Which to Grow

You can grow shallots two ways, and the choice shapes your whole timeline. Sets are small individual bulbs saved from a previous crop; you plant the bulb and it divides into a cluster. This is the traditional, foolproof method — fast, reliable, and ideal for fall planting. The drawback is that named heirloom set varieties (like ‘French Red’ or ‘Dutch Yellow’) can be slightly more prone to bolting and a touch more expensive per plant.

Seed-grown shallots (varieties such as ‘Conservor’, ‘Ambition’, or ‘Zebrune’) are a newer option that produce single, larger bulbs rather than multiplying clumps, with excellent uniformity and disease resistance. Seed is cheaper and avoids carrying over soil-borne disease, but it is slower: start seed indoors 8–10 weeks before your last frost, much like onions. For most home gardeners, sets are the easier entry point, so this guide leans on them while noting seed timing where it differs.

When to Plant Shallots

Shallots are remarkably cold-hardy, and timing is the single biggest lever on bulb size. Fall planting produces the largest, most numerous bulbs because the plants establish roots over winter and surge into growth at the first warmth of spring. In zones 5 through 9, plant sets 4 to 6 weeks before the ground freezes — typically September through November — then mulch heavily for insulation. The tops may emerge briefly, die back in hard cold, and regrow in spring; that is normal.

Spring planting is the right call in colder regions (zones 3–4) or if you missed the fall window. Plant sets as soon as the soil can be worked, usually 2 to 4 weeks before the last frost — late March to April in much of the country. Spring-planted shallots produce somewhat smaller clumps but are perfectly reliable. Seed-grown transplants go out around the same spring window once they are pencil-thick. Like onions, shallots are sensitive to day length for bulbing, so choose a variety suited to your latitude (long-day for the North, intermediate or short-day for the South).

Soil Preparation

Shallots demand full sun — at least 6 hours, more is better — and loose, fertile, free-draining soil. Their shallow roots cannot fight heavy, waterlogged ground, and bulbs sitting in cold wet soil rot. Target a pH of 6.0 to 6.8. Before planting, dig in 2 to 3 inches of finished compost or well-rotted manure to feed the crop and lighten the texture. If your soil is heavy clay, raise the bed or amend it generously; our guide on improving clay soil walks through the materials that fix poor drainage. Work in a balanced fertilizer at planting — about 1 pound of 10-10-10 per 100 square feet, or an organic blend — but avoid excess nitrogen, which pushes leafy growth at the expense of bulbs.

How to Plant Shallots

Planting sets could not be simpler. Separate the bulbs and push each one into prepared soil pointy end up, flat root-plate down, so the tip sits right at or just below the soil surface — bury it no more than about an inch, or the developing clump struggles to push up. In very cold zones you can plant slightly deeper for winter protection and pull mulch back in spring.

Space sets 6 inches apart in rows 12 inches apart. That generous spacing matters because each bulb becomes a clump that needs room to swell. In a raised bed or square-foot grid, plant about four shallots per square foot. Firm the soil around each set, water in, and apply a 2-inch mulch of straw or shredded leaves to moderate soil temperature and hold moisture. For fall plantings, increase that mulch to 4 inches once the ground chills for winter insulation. If you are short on ground, shallots do well in containers at least 8 inches deep — a good project for anyone working with raised beds and small-space gardening. Seed-grown transplants are set out at the same spacing once hardened off.

Watering, Feeding and Weeding

Shallots need steady but moderate moisture: about 1 inch of water per week during active growth. Their shallow roots dry out fast, so check the top inch or two of soil and water before it bakes hard, but never let bulbs sit in soggy ground. As harvest approaches and the tops begin to yellow, deliberately cut back on water — this signals the bulbs to mature and firm up, and dry conditions during ripening dramatically improve storage life.

Feed lightly. About four weeks after growth resumes in spring, side-dress with a nitrogen source — blood meal, a little 10-10-10, or fish emulsion — to power early leaf growth, since the number and size of leaves determines bulb size. Stop all feeding once bulbing begins (you will see the clump swelling and the necks thickening); late nitrogen produces soft bulbs that rot in storage. Weeding is critical: shallots are poor competitors with their wispy upright leaves, so keep the bed weed-free, and weed by hand or with a shallow hoe to avoid slicing the shallow roots and bulbs.

Pests and Problems

Shallots share the onion family’s pests but are generally trouble-free. Onion thrips are the most common, rasping silvery streaks into the leaves in hot dry weather; encourage them by drought stress, so consistent watering plus a blast of water or insecticidal soap usually keeps them in check. Onion maggots, the larvae of a small fly, tunnel into bulbs — protect spring plantings with floating row cover and rotate alliums out of the bed each year. On the disease side, watch for downy mildew and white rot in wet seasons; both are managed by good drainage, wide spacing for airflow, and a three- to four-year crop rotation so allium diseases do not build up in the soil. Pull and destroy any plant that bolts (sends up a flower stalk) early — bolted shallots will not store well, so use those bulbs fresh.

Harvesting and Curing

Shallots are ready to harvest about 90 to 120 days after spring planting, or in early-to-midsummer for fall-planted crops. The signal is unmistakable: the leaves begin to yellow, soften at the neck, and flop over. Once roughly half to three-quarters of the tops have fallen, stop watering and let the soil dry for a few days. Then, on a dry day, loosen the clumps with a fork and gently lift them — do not yank by the tops, which can bruise the bulbs.

Curing is the step that turns a perishable harvest into a six-month pantry staple. Brush off loose soil (do not wash) and spread the clumps in a single layer in a warm, dry, airy, shaded spot — a covered porch, garage, or greenhouse bench works well. Cure for 2 to 4 weeks until the outer skins are papery and the necks are completely dry and tight. You can leave the clumps whole or separate them into individual bulbs once dry. Trim the roots and cut the tops to about an inch, or braid them if you like. Store cured shallots in a mesh bag or open basket in a cool (50–60°F), dark, dry place; well-cured bulbs keep for 6 to 8 months. Set aside a few of the firmest, healthiest bulbs as next year’s sets. Looking for more crops that store through winter? Browse our full library of vegetable growing guides.