In spring plant seeds in ground 4-6 in April. You can also grow seeds indoors in flats and transplant in June. In mild climates, plant seeds about 4 months before first expected frost for a fall/ winter crop. Seeds should be planted 1/4-inch to 1/2-inch deep in rows with 14-inches to 24 -inches of spacing. Use compost or a slow-acting fertilizer when planting seeds. Brussels Sprouts grow to 3 feet tall with a spread of 2 feet. They require 1-inch water per week. Brussels Sprouts can not be grown in greenhouses.
Harvesting Brussels Sprouts
Harvest Brussels Sprouts from the bottom first when the large leaves begin to turn yellow. Sprouts should be bright green, firm and about the size of a golf ball. After picking your sprouts mound dirt around the bottom of the stem up to keep the plant from tipping over.
Brussels Sprouts Pests
- Aphids are present when sprouts curl, pucker and turn yellow. Plants might become stunted in growth. Spray vigorously with water to remove aphids.
- Cabbage maggots are present when seedling become yellow and growth is stunted. Brown tunnels are in the stems just below the soil line. Apply wood ashes and water, let sit overnight around the rootball.
- Whitefly is present if the plant is covered in a white powdery substance. Spray vigorously and rub between fingers to remove whitefly.
Nutrients in Brussels Sprouts
- Vitamins A, B6, C, K