3. Early White Vienna
This round, light green cultivar has globe-shaped bulbs with creamy, sweet, tender flesh inside that has a mild flavor.
Plan to pick this one a bit earlier than some other types, around 55 days after planting, when the bulbs are about two to three inches in diameter.
A 19th-century heirloom, this variety of kohlrabi also produces leaves that are suitable for harvest when they’re young.
This heat-tolerant variety loves full sun, and will continue producing through the summer, with a mature height of six to eight inches, and a spread of 12 inches.
Seeds in various packet sizes are available from True Leaf Market.
4. Hummingbirds
This vibrant purple hybrid cultivar stands out in the garden, with crisp, tender flesh that’s mild and slightly sweet beneath its colorful skin.
Bulbs are best harvested at three to four inches in diameter, about 45 to 55 days from sowing.
Compact and uniform, with a mature height and spread of 12 to 18 inches, it’s well suited for small spaces and container growing.
The leaves are tender and tasty too, making an extra bonus for the kitchen. ‘Kolibri’ is a favorite for both fresh eating and cooking thanks to its reliable yields and excellent flavor.
You can find seeds available at High Mowing Organic Seeds.
5. Konan’s hybrid
This pale-green globe-shaped hybrid cultivar is crunchy and sweet, with bulbs that are between four and six inches in diameter at harvest time. And it’s productive early too, ready to pick in about 40 to 45 days after planting.
Pest resistant, with a mature spread of 12 to 18 inches and a height to match, you’ll love the delicious leaves as well. It’s also suited to growing in containers.
‘Konan’ is a 2016 All-America Selection winner in the vegetable category.
Packets of 100 seeds are available from Burpee.
6. benefit
Another early variety of kohlrabi, ‘Korist’ produces frosted green, somewhat flattened globes that are about four inches in diameter at harvest time.
The sweet, crisp white flesh is mild in flavor, and extra juicy.
Ready to pick in 55 to 65 days, this variety stays tender longer through the season than some, without getting woody.
If you’re out of town for a week or two and you pick your harvest a bit late, you shouldn’t have to worry about the quality declining!
Seeds are available for purchase via High Mowing Organic Seeds.
7. Kossak
Said to be the most attractive green variety with highly uniform globes, this giant type is perfect for long-term storage.
As long as you keep them cold after they’re picked, the bulbs can last for up to four months.
These whoppers reach a mature diameter of up to eight inches across, and they’re ready to harvest in just 45 days.
Even at such a large size, the flesh inside is sweet and tender. Just be sure not to wait too long to pick these.
You’ll know you’ve let them go too long when they start to lose their rounded shape and become elongated.
You can find ‘Kossak’ kohlrabi seeds available from High Mowing Organic Seeds.
8. Purple Vienna
Known for its very mild flavor and attractive color, this reddish-purple cultivar has slightly flattened globe-shaped bulbs with tender white flesh inside, and tasty purplish leaves.
‘Purple Vienna’ plants reach a height of about 12 to 18 inches, with a spread of 12 inches.
The bulbs are ready to enjoy in about 55 to 60 days when they’re two to three inches across, about the size of a tennis ball.
Try growing this variety in containers if you’re short on space.
One-gram packets of seeds are available from Botanical Interests.
9. Super melting
Kohlrabi is a new vegetable for many, and for gardeners who are inexperienced when it comes to this particular garden delicacy, it’s understandable that you may be in the market for a smaller, more manageable harvest.
