Shallot plant profile
Allium cepa var. aggregatum
A biennial vegetable for full sun.
Last updated .
When to plant
When to plant Shallot
Shallots are a cool-season allium usually grown from bulb sets. Utah State University Extension says to plant a bulb set or seeds in early spring as soon as the ground can be worked; sets can also be planted in autumn after the first frost for a late spring harvest.
The calendar shows this cited seasonal window as an approximate band. It does not convert the season into frost-adjusted dates.
Open Shallot in my garden calendarShows the source-backed planting season, not frost-adjusted dates.
Growing conditions
- Sun
- Full sun
- Planting depth
- 1 in
- Soil pH
- 5.5 to 7.5
- Lifecycle
- Biennial
- Spacing
- 3 to 6 in apart, rows 12 in
- Days to maturity
- 50 to 60 days (from sowing)
Common problems
Watch for these
Evidence trail
Evidence behind this profile
Original extension and institutional publications behind the planting, care, and safety facts on this page.
- How to Grow Shallots in Your Garden
Utah State University Extension. Supports general reference. Checked 2026-06-18.
- Toxic and Non-Toxic Plants: Onion (Allium cepa) entry
ASPCA Animal Poison Control Center. Supports pet-safety verdicts for dogs and cats. Checked 2026-07-18.