Kohlrabi is a biennial plant that belongs to the Curciferae (cabbage) family of plants. It is also called stem turnip and turnip cabbage. Kohlrabi was originally developed from a strain of wild cabbage that grew in the coastal regions of north Africa and Europe. Kohlrabi is hardy in the USDA zones 3 to 10. Kohlrabi has become a staple in many European gardens and is also grown in Canada, Asia and the United States. For best production, plant kohlrabi in full sun and provide moist, organic-rich soil.
Place seed raising mix into individual 2 to 3 inch wide peat pots. Use the back of a spoon to compress the soil in the peat pots. Add more soil if necessary, so that the soil is about 1/2 inch from the top of the rim.
Pour water into the peat pots to moisten the top 1 inch layer of the soil. Sprinkle 2 to 3 of the kohlrabi seedlings across the surface of the soil in the peat pots. Push the seeds into the surface of the soil using the back of a spoon.
Scatter 1/2 inch of the seed raising mix over the surface of the soil in the peat pots. Mist the surface of the soil in the peat pots until it's visibly well dampened.
Place the peat pots where the temperature will stay between 55 and 75 degrees F. Keep the soil in the peat pots moist by spritzing the soil with water, as needed. Germination of kohlrabi typically takes between 5 and 15 days. Transplant the kohlrabi seedlings when they have at least 5 to 6 true leaves.
Planting Kohlrabi Seedlings
Turn over the soil in the planting area to a depth of between 10 and 12 inches to work in to the soil 3 to 4 inches of an organic material. Use rotted manure, compost, leaf mold or other similar manner.
Create rows,10 to 12 inches wide, and space each row 18 to 20 inches apart. In the center of each row, dig holes twice the diameter of the peat pots, and approximately the same depth. Space each of the holes at between 2 and 5 inches apart, depending on a variety of kohlrabi you are growing. (Larger varieties need more room to grow).
Put the peat pots in water to soak for 10 to 15 minutes. (This helps speed up the peat disintegrating). Cut the top off on each peat pot down to the level of the soil. (Cutting off the top section prevents moisture loss). Place a kohlrabi seedling into a previously dug hole. Make sure you plant the kohlrabi seedling at the same depth it is growing in the peat pot.
Scoop in soil around the kohlrabi seedling, tapping it down gently as you go. Then water each of the kohlrabi seedlings generously.
About this Author
Katelyn Lynn is a certified holistic health practitioner who specializes in orthomolecular medicine and preventative modalities. She also has extensive experience in botany and horticulture. Lynn has been writing articles for various websites relating to health and wellness since 2007. She has been published on gardenguides.com. She is currently pursuing a Bachelor of Science in alternative medicine from Everglades University.