Some varieties will protect the curd without tying. Harvest a curd when it is 5 to 8 inches in diameter and before the segments begin to separate. Kohlrabi Tops should still be long and green at harvest. Stems should be no thicker than 3 inches. Brussels sprouts Harvest when size of sprouts is acceptable to the gardener.
Flavor is best when sprouts develop in cool weather.
Kale Kale is the hardiest of the cabbages, and harvest can continue long after freezing weather begins. You can harvest the whole plant, the bunched leaves, or the striped leaves. John C. Nye, Dean and Director. Distributed in furtherance of Acts of Congress of May 8 and June 30, 1914. It is the policy of the Delaware Cooperative Extension System that no person shall be subjected to discrimination on the grounds of race, color, sex, disability, age, or national origin.