Days to Maturity: Approximately 90-110 days from transplant to first harvest (sprouts mature from the bottom up).
Sun Needs: Full sun with at least 6-8 hours of direct sunlight daily—essential for tight sprout formation and sweet flavor in Utah’s climate.
Season Type: Cool-season crop; best for mid-spring transplanting aiming for late summer/fall harvest—very cold-tolerant and improves in flavor after frost.
Plant Habit & Support: Tall plants 24-36 inches tall; staking is recommended in windy areas to keep stalks upright—space 18-24 inches apart in rows 30-36 inches apart.
Other Notes: Sprouts develop from the bottom up—harvest as they reach 1–2 inches; watch for cabbage worms, aphids, or clubroot—organic mulch (like straw or compost) helps retain moisture and reduce soil splash; excellent storage variety.
Best Planting Method: Transplant when soil is cool and workable in mid-spring. Space plants 18-24 inches apart in rows or beds; plant at the same depth as in the pot. Amend soil generously with compost for fertility and excellent drainage—raised beds are ideal in heavier or alkaline Utah soils to prevent rot and clubroot. Organic mulch (such as straw, compost, or grass clippings) around plants retains moisture, moderates soil temperature, and suppresses weeds.
Watering Needs: Maintain consistently moist soil (1-2 inches per week) without waterlogging—even moisture throughout growth prevents loose sprouts or bitterness; drip irrigation is best in dry Utah conditions to keep foliage dry and reduce disease. Mulch helps during warmer spells; avoid letting soil dry out completely, especially during sprout formation.
Fertilization Needs: Incorporate compost or balanced organic fertilizer at planting for nutrient-rich soil. Brussels sprouts are heavy feeders—side-dress with a nitrogen-rich option (like compost tea or fish emulsion) 3-4 weeks after transplanting, and possibly again midway, to support stalk and sprout development. Avoid excess nitrogen late to prevent soft, pest-prone plants; harvest sprouts from the bottom up when they are firm and 1–2 inches in diameter by snapping or cutting them off.