What Should I Know About My Variety Of Kohlrabi?

Do you grow a variety called ‘Superschmelz’?

Do you grow a variety called ‘Winner’?

Do you grow a variety called ‘Kossak Hybrid’?

Do you grow a variety called ‘Kolibri’?

Do you grow a variety called ‘Grand Duke F1’?

‘Superschmelz’ is a giant variety, with bulbs up to 8–10 inches across. The skins of ‘Superschmelz’ are pale green and the white flesh remains sweet and tender even into maturity. It grows quickly, maturing within 60 days, and is resistant to bolting and splitting. This variety is unsuitable to be grown in containers. It can be planted during early spring to late summer and harvested during early summer to late fall. It has poor resistance to pests and diseases and it is a fairly cold-hardy variety.

This hybrid produces round to slightly squashed bulbous stems that grow to about 18 oz (500g) in less than two months. Best suited for late summer planting, pale-green ‘Winner’ bulbs hold well in the garden in cool fall weather. This variety is suitable to be grown in containers. It can be planted during spring or late summer and harvested during early summer or in autumn. It has poor resistance to pests and diseases and it is a fairly cold-hardy variety.

This light-green, a white-fleshed hybrid can be harvested in two months, or allowed to grow to the size of a bowling ball. Even at a giant size, ‘Kossak’ maintains its crunchy sweetness and does not become woody. It keeps for months in refrigerated storage. This variety is suitable to be grown in containers. It can be planted during spring or late summer and harvested during summer or in autumn. It has poor resistance to pests and diseases and it is a fairly cold-hardy variety.

The flattened globe-shaped bulbs of this variety are 4–6 inches across, purple-skinned, and white-fleshed. Since they retain their sweetness and juiciness when most other kohlrabi have become woody, this is a good choice for a late harvest. This variety is unsuitable to be grown in containers. It can be planted during early spring to late summer and harvested during early summer to late fall. It has some resistance to pests and diseases and it is a fairly cold-hardy variety.

Hybrid ‘Grand Duke’, a 1979 All-America Selections winner, produces light-green bulbous stems in less than two months. Harvested at 4 inches, the flesh is sweet and finely textured. Young leaves can be cooked along with the “bulbs.” This variety is suitable to be grown in containers. It can be planted during spring or late summer and harvested during early summer or in autumn. It has some resistance to pests and diseases and it is a fairly cold-hardy variety.

Harvest the purple-skinned, white-fleshed bulbous stem of ‘Early Purple Vienna’ at 55 to 60 days, when it reaches the size of a tennis ball. If left to grow larger, it will become woody. Leaves of this flavorful heirloom can be cooked like kale. ‘Early Purple Vienna’ variety is suitable to be grown in containers. It can be planted during spring or late summer and harvested during early summer or in autumn. It has poor resistance to pests and diseases and it is a fairly cold-hardy variety.