Harvest · Signals, not a promise
When to harvest asparagus
When to harvest asparagus here is cited size, cut-or-snap, calendar, and harvest-year 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 asparagus.
What the sources say — at a glance
One source per card. Facts are not averaged.
Clemson HGIC 1300 (South Carolina)
Spears 6 to 8 inches; cut or snap at the soil surface before tips begin to separate. Lightly in the third or fourth year.
Details and limits (3)
Harvest
Clemson HGIC 1300 (South Carolina): harvest spears at 6 to 8 inches; cut or snap them at the soil surface before the tips begin to separate.
Harvest
Clemson HGIC 1300 (South Carolina): harvest lightly in the third or fourth year for three to four weeks. Stop harvesting when the diameter of the spears has been reduced to pencil-size. Cue — not a keeping promise. Cited harvest-year line — not a BioArva harvest-year rule.
Limit
Not storage.
Maryland Extension (Maryland)
6- to 8-inch spears snapped just below the soil surface. Daily. April through first week of June in the third year.
Details and limits (4)
Harvest
Maryland Extension (Maryland): asparagus shoots or spears should not be harvested the first season after crowns are set. Harvest lightly for 3 to 4 weeks the second year. Cue — not a keeping promise. Cited harvest-year line — not a BioArva harvest-year rule.
Harvest
Maryland Extension (Maryland): the 6- to 8-inch spears should be snapped off just below the soil surface. Harvest spears daily during the harvest period. Cue — not a keeping promise.
Harvest
Maryland Extension (Maryland): April through the first week of June (once plants are in their third year of growth). Maryland calendar — not a ZIP tool or keeping promise. Cited harvest-year line — not a BioArva harvest-year rule.
Limit
Not storage.
UMN Extension (Minnesota)
Begin harvest two years after planting crowns, three years after planting seeds. Harvest spears until June 30.
Details and limits (2)
Harvest
UMN Extension (Minnesota): begin harvest two years after planting crowns, and three years after planting seeds. Harvest spears until June 30. Cue — not a keeping promise. Cited harvest-year line — not a BioArva harvest-year rule.
Limit
Not storage.
Illinois Extension (Illinois)
Third year after planting crowns, no more than one month. Fourth year through May or June. Spears 5 to 8 inches; cut or snap.
Details and limits (3)
Harvest
Illinois Extension (Illinois): asparagus can be harvested the third year after planting crowns, but for no more than one month the first season. During the fourth year and thereafter, the spears may be harvested from their first appearance in the spring through May or June (as long as 8 to 10 weeks). Cue — not a keeping promise. Cited harvest-year line — not a BioArva harvest-year rule.
Harvest
Illinois Extension (Illinois): harvest spears 5 to 8 inches in length by cutting or snapping. Cue — not a keeping promise.
Limit
Not storage.
Sources differ
Make it yours
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How do you know when asparagus is ready to harvest?
Compare cues on the cited sheets. Clemson HGIC 1300 (South Carolina): spears at 6 to 8 inches; cut or snap at the soil surface before the tips begin to separate. Maryland: 6- to 8-inch spears snapped just below the soil surface. Illinois: spears 5 to 8 inches, cut or snap.
Do the sheets agree on a harvest year?
No. Each sheet’s harvest-year line stays on its own card — not averaged and not a BioArva rule.
How we know — methodology. Ranges and assertions are cited per source, not blended.