Kohlrabi

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Pest management: Kohlrabi is in the cabbage family, and pests are similar across the family. This group is also known as cole crops or brassicas and includes broccoli, cabbage, and cauliflower.

The Basics

Kohlrabi is a member of the cabbage family and is grown for its edible, bulb-shaped, stem. Often mistaken for a root plant, the bulb sits just above the soil. The taste and texture are similar to the stems of broccoli but is juicier and crisper.

When to plant: Direct seed or transplant Feb–Mar, Sept–Oct (maybe Aug). For transplants, allow 6 weeks from seeding to transplanting.

Harvest window: Harvest when young and tender. Kohlrabi left too long can become tough and develop off flavors. Kohlrabi leaves are also edible.

Care overview

• Kohlrabi is a fast grower, usually ready to harvest within 8 weeks (variety and weather dependent). Use succession planting to space out your harvest.
• An extended cool period followed by warmth can cause the plants to bolt (send up a flower stalk) which also causes them to get woody and tough.

Recommended Varieties for Santa Clara County^*

Note: The external color of the bulb can be white or purple, but the flesh will still be white.

Other recommended varieties: Early Purple Vienna, Kohlibri, White Vienna

^* Many other varieties may also do well here in Santa Clara County. This list is based on UC Master Gardener trials, taste tests, and feedback from local growers.