Start Brussels sprout seeds indoors 2 to 3 weeks before your last frost date in the spring. Plant the seeds 1/4 to 1/2 inch (6.35 to 12.7 mm) deep in your seed trays.

When the seedlings are 4 to 5 weeks old and about 3 inches tall you can transplant them into your garden after hardening off. Space the plants 14 to 18 inches (35.56 to 45.72 cm) apart.

Brussels sprouts grow best in full sun but may be grown in part shade. It will slightly slow down its growth.

Fertilize the seedlings when you plant them by filling up the planting hole with liquid fertilizer. Once the plants have grown 12 inches (30 cm) tall fertilize again with fish fertilizer, compost tea, or compost.

Keep the plants well-watered but don’t let the soil stay soggy. They need 1 inch (2.54 cm) of water per week. Mulching will help the soil to maintain an even moisture.

Brussels sprouts can get 2 feet (60.06 cm) or taller. Use stakes to support the plants and prevent damage from strong winds.

To help the sprouts grow faster, you can cut the leafy top off the plants once the bottom sprouts have reached 3/4 inch (1.9 cm) in size. It can also help to prune off the bottom branches as the sprouts start to grow.

For the best flavor harvest sprouts after they have had a light frost. They should be 1 inch (2.54 cm) in size and firm to the touch.