The allotment book by Andi Clevely
Bed A year one Legumes poded veg and onion family followed by brassicas in year two
year two Brassicas cabbage family interplanted with salads followed by rootcrops in year three
year three Root crops leaf crops and extras like sweetcorn followed by legumes in year four
Bed B year one Brassicas
year two Root crops
year three Legumes
Bed C year one Root crops
year two Legumes
year three Brassicas
Hope this helps