Shallots are the gourmet onion: milder, sweeter and easier to store than bulb onions, and one of the simplest crops to grow in Zone 7. This guide covers when to plant shallots zone 7 in detail: the sowing, transplanting and harvest windows for USDA Zone 7, plus spacing, soil, water, companions, pests and storage — all based on USDA zone averages and standard published crop ranges.
Zone 7 covers areas with average annual minimum temperatures of 0 to 10°F. The average last spring frost falls in the Mar 15–Apr 1 range and the average first autumn frost in the Nov 1–15 range. These are USDA zone averages, not exact dates for any one garden — check your local extension service and the forecast before planting tender crops outside. The frost-free season runs roughly seven months, from late March into early November,
When to plant shallots in Zone 7
Plant shallot sets in late February to March, as soon as the soil is workable — shallots are hardy and tolerate the last frosts of Zone 7. Push each set about an inch deep, point up, spacing them 6–8 inches apart in rows a foot apart. Each set divides into a cluster of five or more bulbs by midsummer.
The table below puts the whole season on one page. All dates are ranges worked back from the Zone 7 frost averages (Mar 15–Apr 1 last frost, Nov 1–15 first frost) and the crop's published days to maturity (90–120 days). Use the frost date calculator to check the averages for your own area, and confirm them with your local extension service.
| Stage | Zone 7 window | Notes |
|---|---|---|
| Start indoors | Feb from seed (optional); sets are simpler | Germination takes 7–14 days |
| Direct sow outdoors | Late Feb–Mar, plant sets 1 inch deep | Sow into moist, prepared soil |
| Transplant outdoors | — (plant sets where they are to grow) | Harden seedlings off first |
| First harvest | July–Aug, 90–120 days after planting, when tops fall | 90–120 days to maturity |
| Autumn / second sowing | Plant sets Oct–Nov for overwintering in mild parts of the zone | Count back from the first frost |
Starting and planting
Shallots want sun, good drainage and soil with a pH of 6.0–7.0. They dislike wet feet, so raised beds or well-drained soil suit them best. Water in dry spells while the bulbs are forming, but ease off as the tops begin to yellow — dry soil at the end helps them store.
Before sowing, fork the bed over, remove weeds and stones, and dig in well-rotted compost. Shallots grows best at a soil pH of 6.0–7.0 — test your soil through your local extension service before amending it.
Spacing, sun and soil
Space plants 6–8 inches apart. Crowded plants compete for light, water and nutrients, stay small, and invite disease through poor airflow, so thin seedlings to the final spacing once they are established.
This crop needs full sun — at least six hours of direct sun a day, and more is better. In Zone 7, a south-facing bed or an open spot away from trees and fences gives the strongest growth and the best flavour.
Soil should be deep, fertile and free-draining, with a pH of 6.0–7.0. Heavy clay improves with compost and organic matter, and raised beds help where drainage is poor.
Watering
Water needs are moderate: aim for steady, even moisture rather than feast-and-famine watering. About an inch of water a week from rain or irrigation is a useful guide in most Zone 7 summers, more in hot, dry spells. Water at the base of the plant in the morning, mulch to hold moisture, and avoid wetting the leaves, which invites disease.
Companion planting
Good companions for shallots include marigolds, basil, onions, lettuce. Planting companions nearby can help with pest confusion, pollination and making the most of bed space — marigolds, for example, are a classic companion across the vegetable garden. The companion planting finder can suggest combinations for your whole bed. Avoid planting shallots where others of the same family (Amaryllidaceae) grew last year: rotate crops each season to reduce soil-borne disease and pest build-up.
Common pests and problems
Watch for aphids, slugs, cutworms. - Aphids — inspect weekly; hand-pick or wash off with water, and encourage natural predators.
- Slugs — inspect weekly; hand-pick or wash off with water, and encourage natural predators.
- Cutworms — inspect weekly; hand-pick or wash off with water, and encourage natural predators.
Beyond pests, the main problems are weather-related: a late frost after transplanting, drought at a critical stage, or waterlogged soil after heavy rain. Cover tender plants with frost cloth if a late frost threatens, and mulch to even out soil moisture.
Harvest and storage
Harvest in July to August, when the tops fall over and begin to dry. Lift the clusters carefully with a fork on a dry day, separate the bulbs, and cure them in the sun or under cover for a week or two until the skins are papery. Well-cured shallots are the prize: sweet, firm and long-keeping.
Store cured shallots in a cool, dry, airy place — a mesh bag or a braid hung in a shed keeps them for months. Save the largest bulbs for replanting in autumn or spring.
The classic Zone 7 mistake with shallots is planting the sets too deep. Buried sets rot or produce small bulbs — the tip should sit just at or slightly above soil level.
Frequently asked questions
When should I plant shallots in Zone 7?
Plant shallot sets in late February to March, as soon as the soil is workable — shallots are hardy and tolerate the last frosts of Zone 7. Work from the table above, using the average last frost (Mar 15–Apr 1) and first frost (Nov 1–15), with 90–120 days to maturity. These are USDA zone averages, not exact dates for any one garden — check your local extension service and the forecast before planting tender crops outside.
How much sun does shallots need in Zone 7?
Full Sun — at least six hours of direct sun a day where possible. Give it the sunniest spot you have.
What soil pH does shallots prefer?
A pH of 6.0–7.0. Test your soil before amending it, and add compost to improve structure whatever the pH. Your local extension service can test a sample and recommend amendments.
What pests attack shallots in Zone 7?
The most common are aphids, slugs, cutworms. Inspect plants weekly, hand-pick larger pests, wash small ones off with water, and keep the bed clean and well-spaced so air circulates.
How do I store shallots after harvest?
Store cured shallots in a cool, dry, airy place — a mesh bag or a braid hung in a shed keeps them for months. Save the largest bulbs for replanting in autumn or spring.
See the Zone 7 March planting guide for what else to sow and plant in the same month, browse the full planting calendar, and try the Plant Spacing Calculator to plan your dates. For a related crop, see when to plant scallions in Zone 7.