Watch this video together with the April 2018 video and take note a couple of key observations:  First of all, even by mid-April, some cover crop species are still just waking up, and unless the full month of April and at least part of May are available for them to stay in the ground, their contribution may not be fully reached.  Second, there are marked differences in weed control, with the radish being a powerful ally in weed suppression, especially when early planting is also vital.

Watch the video series comparing the trials in Ohio with the trials in South Carolina to see what a difference location makes in the growth of these species.