Watch a walk-through of three cover crop trials from Ohio and South Carolina. These videos showcase the performance of a variety of cover crop species.
Ohio State University Trials
First, by mid-April, some cover crop species are still waking up. For these species, unless April and at least part of May are available for them to stay in the ground, their contribution could be limited.
Second, there are marked differences in weed control. For example, the radish provided excellent weed suppression, compared to some other species, making it a powerful ally when early planting is vital.
Clemson University Trials
We observed that location makes a difference. South Carolina soils are warmer later in the year and warm up earlier in the year. Winters are shorter and less harsh. In this type of location, winter active varieties and species thrive.