Knol khol Kohlrabi cultivation in Sri Lanka - How to grow Knol khol at Home in pots. Nokol wagawa, ගෙවත්තේ පෝච්චියේ නෝකෝල් වගා කරමු. Knol khol Kohlrabi is a famous upcountry vegetable crop highly cultivating in the Nuwara Eliya district in Sri Lanka. Today I am going to introduce growing Knol khol Kohlrabi in your home garden using small pots. I have used a small container and I added compost and topsoil 1:1 mixture for it. Then I planted Nokol seeds and thinned after 18 days. cultivating Knol khol Kohlrabi in pots, you can get yield within 2.5 months. especially urban gardening you can practice this Knol khol cultivation method simply.