(Best months for growing Kohlrabi in USA - Zone 5a regions)
P = Sow seed
The swollen stem looks like a turnip with reddish/purple cabbage leaves, usually purple or greenish white skin.
Protect from cabbage white butterflies
Use when young.
Scrub well, cut off leaf stalks, roots and woody parts
Young ones do not need peeling.
Can be grated raw for salads
Or cut in pieces and steam .
Use in casseroles.
We cannot help if you are overrun by giant slugs.