Natural, untreated and GMO-free seeds. Open pollinated seeds
Sow in warm soil in spring, as kohlrabi tends to go to seed (bolting) if sown when it is cold. Sow single seeds ½ inch (1 cm) deep in cells filled with seedling soil. Water, label and place on a warm windowsill to germinate. Sow outdoors from early spring until late summer, sprinkling seeds finely along a ½ inch (1 cm) deep trench. Cover with mixture, water well and label the row. Sow small quantities successively every three weeks, in rows 30cm (12in) apart, for a continuous crop.
Harden off seedlings grown indoors once they are 5cm (2in) tall and plant them at 10cm (4in) intervals in rows 30cm (12in) apart. Thin seedlings into the soil 4 inches (10 cm) apart while they are small. Keep the soil free of weeds and water regularly in dry weather. Protect plants with horticultural fleece when the weather cools in the fall.
Harvest by cutting the bulb from the root to ground level with a sharp knife. Start removing the kohlrabi from the ground when it reaches the size of a ping-pong ball. Small bulbs are the tastiest, they are crunchy and tender, but they will harden quickly if they get bigger than a tennis ball. The leaves are also delicious as cooked greens.
