I have a field that's about 5 acres that I want to plough or disc and plant bee forage plants. I am in zone 7b with hot summers and fairly mild winters (usually few freezes with a usual maximum low temp in the high teens or low 20's). Does anyone have suggestions as to what would make good bee foraging fields in the south central US? The soil here is very dark with a fairly high clay content and a higher than neutral pH. I have considered vetch since I know from experience that it grows well here, but would appreciate some other suggestions. Thanks for any info