These vegetables are grown as annuals -- kohlrabi is a cool-season crop and yardlong beans and white eggplants are warm-season crops.
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These three vegetables are grown as annuals: kohlrabi is a cool-season crop and yardlong beans and white eggplants are warm-season crops. They can be grown in USDA zones 3-10.
Because kohlrabi is a cool-weather crop, most gardeners plant it in late winter or early spring and again in the late summer or early fall in order to get two crops a year.
There are many good varieties of kohlrabi available. One, a purple variety called Kolibri, has a globe the color of a frosted grape; another, a white variety named Kongo, produces a greenish-white globe. Both have creamy white interiors that are good for eating raw or cooked. They grow quickly, going from seed to table in 60 to 65 days.