How late can you plant kohlrabi?

Answered by Randy McIntyre

I love planting kohlrabi in my garden, and I’ve had great success with it over the years. If you’re wondering when to plant kohlrabi, it’s best to start about 3 to 4 weeks before the last average frost date in spring. This timing ensures that the plants have enough time to grow and mature before the weather gets too warm.

Kohlrabi is a cool-season vegetable, so it thrives in temperatures between 40°F and 75°F (4.4°C and 23.9°C). These moderate temperatures provide the ideal conditions for kohlrabi to grow and develop properly. If the weather gets too hot, the kohlrabi may bolt and produce smaller, less flavorful bulbs.

In terms of maturity, kohlrabi typically takes about 45 to 60 days to reach full maturity. This can vary slightly depending on the specific variety you’re growing and the growing conditions. It’s always a good idea to check the seed packet or plant tag for specific information about the variety you’re planting.

In regions with warm winters, you can also plant kohlrabi in late summer for a winter harvest. This allows you to enjoy fresh kohlrabi during the cooler months when other vegetables may not be as readily available. Just make sure to give the plants enough time to reach maturity before the cold weather sets in.

When planting kohlrabi, I like to prepare the soil by loosening it with a garden fork or tiller. I also add some compost or well-rotted manure to provide nutrients for the plants. Kohlrabi prefers a slightly acidic soil with a pH between 5.5 and 6.8, so it’s a good idea to test your soil and make any necessary adjustments before planting.

I sow the kohlrabi seeds directly into the garden, about 1/4 to 1/2 inch deep. I space the seeds about 4 to 6 inches apart, and once they germinate and start growing, I thin them to about 8 to 12 inches apart. This gives the plants enough room to grow and develop their bulbous stems.

Kohlrabi plants also benefit from consistent moisture, so make sure to water them regularly. I usually water them deeply once or twice a week, depending on the weather and soil conditions. Mulching around the plants can help conserve moisture and suppress weeds.

In terms of pests and diseases, kohlrabi can be susceptible to cabbage worms, flea beetles, and clubroot. I keep an eye out for any signs of damage or infestation and take appropriate measures, such as hand-picking pests or using organic pest control methods.

Kohlrabi is a relatively easy and rewarding vegetable to grow in the garden. Its unique flavor and texture make it a versatile ingredient in various dishes. Whether you’re planting in spring or late summer, just make sure to provide the right growing conditions and give the plants enough time to reach maturity.