Four bed Crop rotation
This is one of the best ways to do a vegie patch because it is always improving the soil ,maximizing growth potential while reducing pest problems from plants been grown in the same place in succession.
1. The first bed is the Legume,this is Peas,Dwarf Beans,Runner Beans and other edible legumes
The following crop in the same bed is the Brassica bed,this is Cabbage,Broccoli,Brussels,Kale,Kholrabi etc....
2. The next crop is the root crop bed,this is your Carrots,Parsnips,Beetroot & other root crops
3. The next bed is your Sweet Corn,Pumpkin,Squash,Zucchini,Cucumber & other Cucurbits
4. The last bed is for Tomato,Potato,Eggplant,Chilli & other Solanums
Then returning to the Legumes and so on.
Six bed rotation crop
If you are doing a 6 bed crop you can grow the Legumes & Brassicas in separate beds & a green manure crop in the bed that follows the Brassicas, every other bed stays the same.