Crop guide
Growing Brussels sprouts
Growing Brussels sprouts means matching type, timing, and spacing on the cited sheets. There is no single national planting date.
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.
Steps (range, not a promise)
- 01Know the type on the cited sheet. Gemmifera notes stay source-specific.
- 02Plant on the cited sheet’s timing. Regional dates stay on their own cards.
- 03Use in-row depth and spacing from one cited source.
- 04Log the bed so next season is not a guess.
Illustrative photograph — types, timing, and spacing stay on the cited sheets.
The season, on your ground
Save this bed — freeWhen to plantCareWhen to harvestGarden pests
What the sources say — at a glance
One source per card. Facts are not averaged.
Clemson HGIC (South Carolina)
Cool-season brassicas. 65–80 °F. Late summer through fall in the South. No Clemson spacing KEEP.
Details and limits (3)
Types
Clemson HGIC (South Carolina): Brussels sprouts are cool-season brassicas. They grow best at cooler temperatures, 65 to 80 °F. Type notes — not a cultivar mill.
Timing
Clemson HGIC (South Carolina) says late summer through fall is the best growing season in the South. Timing on their sheet — not a national plant date.
Limit
South Carolina HGIC blog. Cool-season wording and 65–80 °F stay Clemson. Not fertilizer.
Maryland Extension (Maryland)
Brassica oleracea. Hardy (heavy frost, attributed). Biennial treated as annual. 4–6 week transplants 90–100 days before first frost. 18–24 in × 30–36 in.
Details and limits (4)
Types
Maryland Extension (Maryland): Brussels sprouts (Brassica oleracea) are a long-season, cool weather crop. Hardy (can withstand heavy frosts in spring and fall). Biennial treated as an annual. Type notes — not a mill. Maryland’s attributed hardiness wording — not a planting-safety promise.
Timing
Maryland Extension (Maryland): grow 4- to 6-week-old transplants to plant in the garden 90 to 100 days before the first frost date. Add 20 days if direct seeding. Maryland timing — not a national plant date.
Spacing
Maryland Extension (Maryland): spacing 18 to 24 inches in-row by 30 to 36 inches between rows. Spacing on their sheet — not a BioArva average.
Limit
Maryland Brussels sprouts garden page. Hardy wording and 18–24 in stay Maryland. Not fertilizer.
UMN Extension (Minnesota)
Brassica oleracea var. gemmifera. Fall crop. June indoor or direct seed. Seedlings 18 in. Thin to 18 in.
Details and limits (4)
Types
UMN Extension (Minnesota): Brussels sprouts (Brassica oleracea var. gemmifera) are grown as a fall crop in Minnesota. Type notes — not a mill.
Timing
UMN Extension (Minnesota): Brussels sprouts are a fall crop in Minnesota. Sow seeds in June, indoors or directly in the garden. Minnesota timing — not a national plant date.
Spacing
UMN Extension (Minnesota): place the seedlings 18 inches apart. Once the plants emerge, thin so that there is one seedling every 18 inches. Spacing on their sheet — not a BioArva average.
Limit
Minnesota Brussels sprouts page. June timing and 18 in stay Minnesota. Not fertilizer.
Illinois Extension (Illinois)
Cool or lightly frosty weather (attributed). Early to midsummer transplants. 90–100 days before first frost. 24–36 in in-row, or 24 in all directions in beds.
Details and limits (4)
Types
Illinois Extension (Illinois): Brussels sprouts grow best during cool or even lightly frosty weather. Type notes — not a mill. Illinois’s attributed frost wording — not a planting-safety promise.
Timing
Illinois Extension (Illinois): transplant in early summer to midsummer about the same time that you would plant late, long-season cabbage. At least 90 to 100 days before the first frost date. Illinois timing — not a national plant date.
Spacing
Illinois Extension (Illinois): space plants 24 to 36 inches apart in the row, or 24 inches in all directions in beds. Cover seeds ¼ to ½ inch deep. Spacing on their sheet — not a BioArva average.
Limit
Illinois Brussels sprouts page. Cool-weather wording and 24–36 in stay Illinois. Not fertilizer.
Make it yours
Save the bed in the Field Book so next season is not a guess.
Sources differ
When do you plant Brussels sprouts?
Compare timing on the cited sheets. Clemson HGIC (South Carolina): late summer through fall is the best growing season in the South. Maryland: 4- to 6-week-old transplants 90 to 100 days before the first frost date. Minnesota: June indoors or direct seed. Illinois: early to midsummer transplants. Not a national plant date.
How far apart do you plant Brussels sprouts?
The sheets do not agree on one grid. Maryland: 18 to 24 inches in-row by 30 to 36 inches between rows. Minnesota: seedlings 18 inches apart. Illinois: 24 to 36 inches in-row, or 24 inches in all directions in beds. Clemson has no spacing KEEP on this page.
What to record in the Field Book
Save the bed with the crop and the date. You may add a photo and notes. Compare entries you have recorded with each other — not with a diagnosis from this page. If you want an identification, bring the record to local Extension.
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 we know — methodology. Ranges and assertions are cited per source, not blended.