Brassica oleracea , Gongylodes Group : Once a common veg , this curious brassica family crop had fallen into inauspicious obscureness , only recently being rediscovered by many present - twenty-four hours nurseryman . Its crisp , mildly sweet light bulb has a hint of apple , can be enjoy rude or misrepresent , and leave lots of fibre , vitamins C and B6 along with cop , K , and Mn . Days to maturity are calculated from day of the month of transplant . Culture• Kohlrabi execute best in the cool season and can tolerate a wide-cut range of mountains of grime types• For extended harvests , plant every 2 - 3 weeks• Mature plant are frost kind and cool conditions bring out sweet flavorDirect Sowing• May and June sowings should be avoided as they result in kohlrabi maturing in the live weather condition , raise dry , woody bulbs• Sowings can resume from mid - July to mid - August for autumn / wintertime harvest• Thin when plants have 2 sets of straight leavesTransplanting• Start seed 4 - 6 weeks before anticipated transplant date• Transplant outside when there are 6 - 8 rightful leaves and nighttime temperatures rest above 40 ° F• Start May — July for transplanting June — August for a fall cropInsects & Diseases• Common insects : See Brassica Insect Information below• Disease bar : 5 - 7 year crop rotationHarvest & Storage• For natural spring - seed Brassica oleracea gongylodes : reap when less than 2 - 4 inches in diameter• free fall - grown kohlrabi is less potential to get woody as it find larger• Store at 36 ° F and 95 % proportional humidity
Brassica Insect InformationAphids : Control aphids with ladybugs or a operose spray of weewee or Pyrethrin . Also , quality varieties that maturate later in the season when aphid populations decline . Cabbage worm , measuring worm , and root maggot : The first signaling of cabbage louse will be off - snowy butterflies fluttering near the industrial plant . They lay their yellowish - colorize eggs on the undersides of leave , which concoct into caterpillar that can cause serious base and head damage . To control light plague , spray plants with Bacillus thuringiensis ( B.t . ) . For heavy infestations , bait cabbage worms by mixing wheat bran into a B.t . root . bestow 1 tablespoon of molasses . Broadcast the bran mixture around the base of plant life . Reapply as necessary . Using Reemay or Summer Insect Barrier can also provide control . Flea beetle : Flea beetles chew tiny pinhole in leaves . Early restraint is essential to downplay the impairment . Spray infected plants with Pyrethrin . Using float row cover such as Summer Insect Barrier can also provide control . Symphylans : In some areas of the US , symphylans ( also known as garden centipede ) can seriously close up the plant emergence of many crops . Only 1/4 in farseeing , white , and very active , they eat the ascendent tomentum of developing plant life . Using larger transplants help tighten damage . Contact your local county propagation agent if you suspect you have a trouble .
