Common Mistakes to Avoid When Growing Green Kohlrabi

Green kohlrabi (Brassica oleracea var. gongylodes) is a cool-season vegetable that belongs to the cabbage family. It is known for its bulbous, turnip-like shape and crisp, mild flavor. When growing green kohlrabi, there are several common mistakes that should be avoided to ensure a successful harvest.

1. Planting in the Wrong Season

Green kohlrabi is a cool-season crop that thrives in temperatures between 40°F and 75°F (4°C to 24°C). Planting it in the wrong season, such as during the hot summer months, can lead to poor growth and bolting, where the plant prematurely produces flowers and seeds. To avoid this mistake, make sure to plant green kohlrabi in early spring or late summer for a fall harvest.

2. Overcrowding

Green kohlrabi plants need adequate space to grow and develop their bulbous stems. Planting them too close together can result in competition for nutrients, sunlight, and water, leading to stunted growth and smaller harvests. To prevent overcrowding, space the plants at least 6 to 8 inches (15 to 20 cm) apart in rows that are 12 to 18 inches (30 to 45 cm) apart.

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3. Poor Soil Preparation

Green kohlrabi prefers well-draining, fertile soil with a pH level between 6.0 and 7.5. Neglecting soil preparation can hinder the plant’s growth and nutrient uptake. Before planting, amend the soil with organic matter, such as compost or well-rotted manure, to improve its structure and fertility. Additionally, ensure proper drainage to prevent waterlogged soil, which can lead to root rot.

4. Inadequate Watering

Green kohlrabi requires consistent moisture to grow properly. Inadequate watering can result in stunted growth, tough and woody stems, and a bitter taste. To avoid this, provide the plants with about 1 inch (2.5 cm) of water per week, either through rainfall or irrigation. Monitor the soil moisture regularly and adjust the watering schedule accordingly.

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5. Lack of Nutrients

Green kohlrabi is a heavy feeder and requires a steady supply of nutrients to thrive. Failing to provide adequate nutrition can lead to nutrient deficiencies, poor growth, and increased susceptibility to pests and diseases. Prior to planting, incorporate a balanced fertilizer into the soil according to the manufacturer’s instructions. Additionally, consider side-dressing the plants with nitrogen-rich fertilizer halfway through the growing season.

6. Ignoring Pest and Disease Management

Green kohlrabi is susceptible to various pests and diseases, including cabbage worms, aphids, flea beetles, and clubroot. Ignoring pest and disease management can result in significant damage to the plants and reduced yields. Implement preventive measures, such as regular inspection, handpicking pests, and using organic pest control methods when necessary. Rotate crops annually to minimize the risk of disease buildup in the soil.

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By avoiding these common mistakes and providing optimal growing conditions, you can successfully cultivate green kohlrabi and enjoy a bountiful harvest of this delicious and nutritious vegetable.

Keywords: kohlrabi, season, planting, growth, plants, growing, common, mistakes, harvest