Introduction
Kohlrabi is a unique vegetable that belongs to the cabbage family. It is known for its bulbous stem, which is often mistaken for a root vegetable. However, kohlrabi is actually a stem vegetable that grows above ground. In this glossary, we will explore what kohlrabi plant care entails and how you can successfully grow this nutritious and delicious vegetable in your garden.
What is Kohlrabi?
Kohlrabi, also known as German turnip, is a biennial plant that is grown for its edible stem. The stem of the kohlrabi plant is bulbous and can come in various colors, including green, purple, and white. The taste of kohlrabi is often described as a cross between cabbage and broccoli, with a mild sweetness.
Planting Kohlrabi
When planting kohlrabi, it is important to choose a sunny location with well-drained soil. Kohlrabi plants prefer cool weather and can be planted in early spring or late summer for a fall harvest. The seeds should be sown directly into the ground, as kohlrabi does not transplant well.
Soil Requirements
Kohlrabi plants thrive in rich, fertile soil that is high in organic matter. The soil should have a pH level between 6.0 and 7.5 for optimal growth. Adding compost or well-rotted manure to the soil before planting can help improve soil fertility and provide essential nutrients for the kohlrabi plants.
Watering
Proper watering is essential for the growth and development of kohlrabi plants. The soil should be kept consistently moist, but not waterlogged. Watering kohlrabi plants deeply once or twice a week, depending on the weather conditions, can help prevent the roots from drying out and ensure healthy growth.
Fertilizing
Applying a balanced fertilizer to the soil before planting can help provide the necessary nutrients for kohlrabi plants to thrive. A fertilizer high in nitrogen can promote leafy growth, while a fertilizer high in phosphorus and potassium can encourage root development and overall plant health.
Thinning and Mulching
Thinning kohlrabi plants to a spacing of 4-6 inches apart can help improve air circulation and reduce the risk of disease. Mulching around the base of the plants with organic materials, such as straw or compost, can help retain moisture in the soil and suppress weed growth.
Pest and Disease Control
Keeping an eye out for common pests, such as cabbage worms and aphids, can help prevent damage to kohlrabi plants. Using natural pest control methods, such as introducing beneficial insects or applying neem oil, can help protect kohlrabi plants from pests without the use of harmful chemicals.
Harvesting and Storage
Kohlrabi plants are ready to harvest when the stem reaches 2-3 inches in diameter. To harvest kohlrabi, simply cut the stem at ground level with a sharp knife. Kohlrabi can be stored in the refrigerator for up to 2 weeks, or blanched and frozen for longer storage.
Culinary Uses
Kohlrabi can be enjoyed raw or cooked in a variety of dishes. The stem can be peeled and sliced for salads, pickled for a crunchy snack, or roasted for a flavorful side dish. The leaves of the kohlrabi plant are also edible and can be used in soups, stir-fries, or sautés.
Health Benefits
Kohlrabi is a nutritious vegetable that is low in calories and high in fiber, vitamins, and minerals. It is a good source of vitamin C, vitamin B6, potassium, and manganese, which can help support overall health and well-being. Incorporating kohlrabi into your diet can help boost immunity, aid digestion, and promote healthy skin.