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SUS Farms · Utah Seed Library
Growing Brussels Sprouts in Utah
vegetable · Brassicaceae · cool season · 100 days to harvest
Methodtransplant
Days to maturity100 days
Seed depth0.5″
Plant spacing24″
Row spacing30″
Germ. temp50–85°F
Schedule (May 15 last frost · Sevier County)
| Start indoors | 1/23 |
| Transplant out | 3/20 |
| First harvest | 6/26 |
Planting depth, drawn to scale
Step-by-step
- 1. Start indoors 16 weeks before last frost. Seed-starting mix in 2-4" cells. Bottom heat at 50–85°F until germination, then drop to room temperature. 14-16 hours of light from clip-lamp 2" from leaves.
- 2. Harden off for 7 days. Day 1: 1 hour outside in shade. Add an hour and more sun each day. Skip if windy or below 50°F.
- 3. Transplant 24″ apart in rows 30″ apart. Soil should be at least 50°F before planting. Black plastic mulch laid two weeks ahead helps in cool springs.
- 4. Mulch and water consistently. 2" of straw or wood chip around the base. Drip line at surface. 1" per week including rain.
- 5. Harvest around day 100. Long-season crop — start mid-March for fall harvest. Snap off lower leaves as sprouts swell.
