Harvest · Signals, not a promise
When to harvest radish
When to harvest radish here is cited size 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 radish.
What the sources say — at a glance
One source per card. Facts are not averaged.
Clemson HGIC 1305 (South Carolina)
Round red before 1 in diameter. White before about ¾ in. Cue — not a keeping promise.
Details and limits (2)
Harvest
Clemson HGIC 1305 (South Carolina): the round red radish should be harvested before it is an inch in diameter. White radishes should be harvested before they are about ¾ inch in diameter. Cue — not a keeping promise.
Limit
South Carolina HGIC 1305. Round-red and white diameter cues stay on this sheet. Not storage.
Maryland Extension (Maryland)
Spring radishes about 1 in diameter. Cut taproot and stem. Cue — not a keeping promise.
Details and limits (2)
Harvest
Maryland Extension (Maryland): harvest spring radishes when they are about one inch in diameter, depending on the cultivar. Cut the taproot and stem from the radish. Cue — not a keeping promise.
Limit
Maryland radishes garden page. One-inch spring cue stays Maryland. Not storage.
Illinois Extension (Illinois)
Pull at usable size, usually less than 1 in. Cue — not a keeping promise.
Details and limits (2)
Harvest
Illinois Extension (Illinois): pull radishes when they are of usable size (usually starting when roots are less than 1 inch in diameter). Cue — not a keeping promise.
Limit
Illinois radish page. Usable-size cue stays Illinois. Not storage.
Sources differ
Make it yours
Save the bed in the Field Book so next season is not a guess.
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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 radish is ready to harvest?
Compare size cues on the cited sheets. Clemson HGIC 1305 (South Carolina): round red before 1 inch; white before about ¾ inch. Maryland: spring radishes about 1 inch. Illinois: usable size, usually less than 1 inch.
Do the sheets agree on diameter?
No. Clemson names round red before 1 inch and white before about ¾ inch. Maryland names about 1 inch for spring radishes. Illinois names usable size, usually less than 1 inch. Three cards — not averaged.
How we know — methodology. Ranges and assertions are cited per source, not blended.