No types of zeraim may be planted in a patch, but all types of greens may be planted in a patch. Mustard and smooth beans are types of zeraim. Large beans are types of greens. A border which was a handbreadth high and was reduced is acceptable, since it was acceptable at the start. If a furrow or water channel is one handbreadth deep, one may plant inside it three species, one over here and one over here and one in the middle.