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Non-GMO
Easy to Grow
Heirloom

Superschmelz Giant White Kohlrabi

Quick Facts:

  • Heirloom variety of kohlrabi
  • Large, globe-shaped bulbs
  • Tender, succulent texture
  • Slightly sweet, mild flavor
  • Crisp and juicy, turnip-like texture

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Quantity: Packet (150 Seeds)

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We ship to all areas of North America including the United States, its territories and outlying islands, and Canada. International orders may incur an additional charge to cover the handling of customs paperwork. Returns are accepted within 30 days of receipt. Full warranty information can be found here.

Superschmelz Giant White Kohlrabi

More about Superschmelz Giant

Brassica oleracea

Superschmelz kohlrabi is an heirloom variety of kohlrabi, a member of the brassica family of vegetables, that is known for its tender, succulent texture and slightly sweet, mild flavor. Superschmelz is prized for its large, globe-shaped bulbs that are easy to grow and harvest. The name "superschmelz" translates to "super melt" in German, referring to the vegetable's tender texture and ability to "melt" in your mouth. The flesh of the kohlrabi is crisp and juicy, with a mild flavor that is often compared to a combination of turnips and mild broccoli stems.  Approximately 55-60 days to harvest.  Each packet contains a minimum of 150 seeds.

Brassica oleracea

Superschmelz kohlrabi is an heirloom variety of kohlrabi, a member of the brassica family of vegetables, that is known for its tender, succulent texture and slightly sweet, mild flavor. Superschmelz is prized for its large, globe-shaped bulbs that are easy to grow and harvest. The name "superschmelz" translates to "super melt" in German, referring to the vegetable's tender texture and ability to "melt" in your mouth. The flesh of the kohlrabi is crisp and ... read more

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Brassica oleracea

Superschmelz kohlrabi is an heirloom variety of kohlrabi, a member of the brassica family of vegetables, that is known for its tender, succulent texture and slightly sweet, mild flavor. Superschmelz is prized for its large, globe-shaped bulbs that are easy to grow and harvest. The name "superschmelz" translates to "super melt" in German, referring to the vegetable's tender texture and ability to "melt" in your mouth. The flesh of the kohlrabi is crisp and juicy, with a mild flavor that is often compared to a combination of turnips and mild broccoli stems.  Approximately 55-60 days to harvest.  Each packet contains a minimum of 150 seeds.

Girl holding kohlrabi

How to Grow Kohlrabi

Kohlrabi grows best in well-draining soil with a pH range of 6.0 to 7.0. The soil should be rich in organic matter and nitrogen, but not too compacted. Full sun to partial shade is required for kohlrabi to grow, but it can tolerate some shade. In hotter climates, it may benefit from afternoon shade. Adequate water is also essential, as kohlrabi prefers consistently moist soil.

Sow indoors 6-8 weeks before last frost.  Plant seeds 1/4" deep in pre-moistened seed starting mix. Keep moist until germination has occurred (7-10 days).

Set transplants outdoors just before the last frost, spacing plants 24" in all directions. Water regularly until seedlings are well-established.

Insect Pests

Very young direct-seeded plants are susceptible to flea beetles. Otherwise, the predominant threat to kohlrabi is the cabbage moth caterpillar. Floating row covers and biological controls like Bacillus thuringiensis (Bt) are very effective at controlling caterpillar damage.

Diseases & Other Problems

Although not common, kohlrabi is susceptible to several fungal and bacterial diseases, including black rot, clubroot, downy mildew, and fusarium yellows. These diseases can cause stunted growth, yellowing of leaves, wilting, and premature death of the plant. In addition to diseases, cabbage can also be affected by nutrient deficiencies, such as a lack of nitrogen or boron, and environmental stresses like heat or drought. To prevent and manage these problems, it's important to remove crop residue in the fall and use proper tillage and/or crop rotation, as well as provide proper soil nutrition and irrigation. Early detection and intervention are key to controlling diseases and other issues in kohlrabi.

Kohlrabi can be harvested by cutting or pulling the root ball and then tearing off the outer leaves from the bulb. Store in an airtight bag or container in the fridge for up to three weeks. Alternatively, kohlrabi can be peeled, sliced, blanched and frozen for long-term storage. The skin of kohlrabi is tough and must be peeled prior to consumption. This is usually done by first slicing off the root and shoot ends to make a flat surface to stabilize the bulb while processing and then carefully cutting down the sides to remove the skin.

CONSIDERATIONS:

As kohlrabi is an outcrossing plant, it is necessary isolate the plants in order to prevent cross-pollination with other related plants such as cauliflower, cabbage, and kohlrabi. Cross-pollination can result in undesirable traits in the offspring, affecting their taste, texture, and appearance. To prevent cross-pollination, you can either plant different crops in separate areas or use physical barriers such as nets or cages to protect the plants (pollinators will need to be introduced in this scenario). As a biennial plant, kohlrabi requires a vernalization, or cooling period, to initiate flowering. Therefore plants must be dug and brought indoors in climates with harsh winters. Once replanted in the spring, plants will begin to develop flowers that eventually give way to siliques, the seed-bearing structures of the oleracea plants.

HARVESTING SEED:

To harvest kohlrabi seeds, allow the plant to fully mature and form seed pods. The seed pods will turn brown and dry when they are ready for harvesting. Cut the seed stalks from the plant and place them in a dry and well-ventilated area for further drying, until the pods split open and release the seeds. Once the seeds are fully dried, separate them from the pods and store them in a cool and dry place until you are ready to plant them.

SEED LONGETIVITY:

Kohlrabi seeds can maintain their viability for up to 5 years if they are stored properly. It's important to store the seeds in a cool, dry place to prevent them from being exposed to moisture or extreme temperatures.

Girl holding kohlrabi

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