
Harvest · Signals, not a promise
When to harvest leeks
When to harvest leeks here is cited size and timing cues. Those notes are not how long yours keeps.
Growing guidance is general information. Timing, spacing, and care depend on cultivar, weather, soil, and local conditions. Check the sources and adjust the plan for your garden.

Illustrative photograph — harvest signals stay on the cited sheets.
Growing lives on growing leeks.
What the sources say — at a glance
One source per card. Facts are not averaged.
Clemson HGIC 1314 (South Carolina)
1 in or more in diameter. Cue — not a keeping promise.
Details and limits (2)
Harvest
Clemson HGIC 1314 (South Carolina): leeks are ready for harvest when they are an inch or more in diameter. Cue — not a keeping promise.
Limit
South Carolina HGIC 1314. One-inch diameter cue stays on this sheet. Not storage.
Maryland Extension (Maryland)
Dig or pull when the stalks are 1 inch in diameter. Cue — not a keeping promise.
Details and limits (2)
Harvest
Maryland Extension (Maryland): dig or pull when the stalks are 1 inch in diameter. Cue — not a keeping promise.
Limit
Maryland leeks garden page. Dig-or-pull 1 in cue stays Maryland. Not storage.
UMN Extension (Minnesota)
Harvest may be delayed until after the first frosts. Cue — not a frost-safety or keeping promise.
Details and limits (2)
Harvest
UMN Extension (Minnesota): its harvest sheet says harvest may be delayed until after the first frosts. Cue — not a frost-safety or keeping promise.
Limit
Minnesota leeks page. After-first-frost delay stays Minnesota. Not storage.
Sources differ
Make it yours
Save the bed in the Field Book so next season is not a guess.
Verified suppliers only
No supplier on this page
When a partner is listed, it will be outbound and disclosed. Nothing to buy here. Fertilizer, soils, and pesticides stay off this slot.
How do you know when leeks are ready to harvest?
Compare cues on the cited sheets. Clemson HGIC 1314 (South Carolina): an inch or more in diameter. Maryland: dig or pull when the stalks are 1 inch in diameter. Minnesota: harvest may be delayed until after the first frosts.
Do the sheets agree on a cue?
No. Clemson and Maryland name about 1 inch in diameter. Minnesota names a delay until after the first frosts. Three cards — not averaged.
How we know — methodology. Ranges and assertions are cited per source, not blended.