Vivant and Hunter Hybrid Turnips are brassica hybrids. They grow and look very similar to each other. As brassicas, they are generally considered to be cool-season plants but can be used in warmer weather if adequate rainfall is timely. If adequate rainfall does not occur, they may not be productive. Biomass production in the summer will be low. They do not make a bulb like a turnip but instead make a taproot typical of other broadleaf plants. Seeding rate was 9 pounds per acre.