Question about cross pollination... Please help ASAP
So, long story short, I have four different tomato varieties growing, all compatible with each other for pollination / breeding. I have the majority planted all together in one area. All the fruit from those plants will be strictly for consumption, as cross pollination in that area is inevitable.
However, I have one plant from each variety growing in pots. My plan is to use these plants for my breeding projects, plus just regular old seed saving. My question is, what is my best option to prevent these potted "seeder" plants from crossing, outside of my intentional breeding? Should I just put them as far apart from each other and from the "eating" patch as possible? Or would it be better to cover the flowers with mesh/cheesecloth and pollinate them 100% manually?