How to grow Brussel Sprouts Groninger Seeds
Planting: Sow seeds indoors 4-6 weeks before the last frost date in spring or direct sow outdoors in late spring or early summer, once the danger of frost has passed. Use well-draining seed trays or pots filled with seed starting mix. Sow seeds about 0.5 cm deep.
Germination: Expect seedlings to emerge in 7-14 days. Provide them with plenty of bright, indirect sunlight and once they have 4-6 true leaves, thin them out to the strongest seedling per pot. Germination should take about 7-14 days and plants should reach maturity after approximately 100 days.
Transplanting: Harden off seedlings gradually before transplanting them outdoors 1-2 weeks after the last frost date.
General Care: Choose a sunny location with well-drained, fertile soil. Water regularly, especially during hot weather, keeping the soil consistently moist but not soggy.
Harvest: Brussel Sprouts Groninger are ready to harvest when the individual sprouts reach a size of 2.5-5 cm in diameter and feel firm to the touch. Harvest them from the bottom of the stalk upwards, starting with the largest and firmest ones. You can continue harvesting over several weeks as new sprouts mature.
Additional Tips: Consider planting companion plants like beans, carrots, or lettuce to attract beneficial insects and deter pests. Keep an eye out for common pests like cabbage worms and aphids, and use organic methods like neem oil or handpicking to control them.
Note: Groninger is a frost-tolerant variety and the flavor of the sprouts is said to improve with cooler weather.