Garden Scheme

Plant library  ·  Vegetables

Shallot

Allium cepa var. aggregatum

Shallot is a compact bulb-forming allium that makes a tidy, low row in the vegetable garden. Its mild bulbs develop in clusters, so reserve a sunny, well-drained section of the bed rather than a damp edge or a spot shaded by taller crops. Plant sets in fall or early spring, then keep the row easy to weed and reach as it fills its allotted space over roughly 90 days.

  • Deer resistant
Sunlight Full Sun
Water Regular
USDA zones 2–11
Spacing 0.5 ft
Mature size 1 ft tall, 0.5 ft wide
Harvest Mid summer - early fall

Placement and use

Use shallots as a narrow border row, a repeating strip through a raised bed, or a short block beside other low crops. At about 1 foot tall, they stay below most staked tomatoes and larger brassicas, but should be placed where those crops will not cast heavy shade. A path-side row is practical because the plants need regular watering and their compact footprint allows easy hand access without stepping into the bed. Carrots, lettuce, tomatoes, beets, chamomile, strawberries, and cabbage can share the broader planting plan; keep shallots separate from beans, lima beans, peas, snow peas, and soybeans.

Spacing and mature footprint

Space shallots 6 inches apart, center to center. Each plant reaches about 6 inches wide, creating a close-set row that uses the bed efficiently without leaving much spare room for weeds. Mark the row clearly and preserve a reachable edge or stepping access alongside it, especially in wider beds. Avoid crowding the bulbs with sprawling crops that could cover the foliage or make summer harvesting awkward.

Three plants set 0.5 ft apart, center to center; shaded circles show the 0.5 ft mature spread.

Sun, water, and soil

Give shallots full sun and soil that drains freely. Maintain regular moisture while plants are growing, using a layout that lets water reach the root zone evenly along the row. Keep the planting area open and weedable: alliums are shallow-rooted, and a weed-free bed reduces competition around the developing bulbs. A light mulch can help keep the soil surface from drying quickly while leaving the bulb row visible and accessible.[1]

Seasonal notes

Plant in fall or early spring, then hold the space through the main growing season rather than treating it as a quick gap-filler. Harvest falls from mid-summer into early fall, so plan nearby successions and bed turnover around that occupancy. When tops begin to dry and fall, ease off irrigation so the bulbs can finish in drier soil before harvest.[2]

Planning caveats

Do not rely on a crowded bulb row to hide weeds or compensate for lost planting space. Crowding can distort bulb development, while shallow roots make alliums less competitive with established weeds. In a crop rotation, move shallots away from areas with recent heavy weed seed production and avoid returning alliums to the same ground year after year when the garden layout allows it.[1]

Growing facts

Botanical name
Allium cepa var. aggregatum
Type
Vegetable
Category
Vegetables
Lifecycle
perennial
USDA hardiness zones
2–11
Sunlight
Full Sun
Water
Regular
Plant spacing
0.5 ft
Mature size
1 ft tall, 0.5 ft wide
Days to maturity
90
Harvest season
Mid summer - early fall
Pollinator friendly
No
Deer resistant
Yes
Native to North America
No

References

  1. Winter vegetable production on small farms and gardens west of the Cascades — Oregon State University Extension Service
  2. Plant onions early for bigger summer bulbs — Oregon State University Extension Service

Editorial content updated 2026-07-20.