We were very impressed with this new purple kohlrabi from a prominent Dutch grower. Kohlrabi is becoming increasingly popular in Europe and should be in this country. If you start it from transplants, it and kale will be the first cole crops that you harvest. We began harvesting Kolibri just 40 days from transplanting. The exterior is a very attractive medium purple and the interior a crisp, clear white.
Flavor is fine, delicate for kohlrabi.
We continued harvest over a seven week period and by the end the size of the globes exceeded a pound, but they were not at all woody. This allium takes a long time to mature so it is best started indoors at least six weeks before you wish to plant. When planting out, provide 5 or 6 inches of separation and plant in a trench. As plants mature, fill in around them to assist in blanching. The long, broad necks are blanched by gradually hilling up the adjacent soil.