> First, cross pollination can only occur between varieties, not species. So, for example, a cucumber cannot cross pollinate with a squash. They are not the same species. This would be like a dog and a cat being able to create offspring together. It is simply not possible. But, cross pollination can happen between a zucchini and a pumpkin. This would be like a yorkie dog and a rottweiler dog producing offspring. Odd, but possible, because they are of the same species.
> First, cross pollination can only occur between varieties, not species. So, for example, a cucumber cannot cross pollinate with a squash. They are not the same species. This would be like a dog and a cat being able to create offspring together. It is simply not possible. But, cross pollination can happen between a zucchini and a pumpkin. This would be like a yorkie dog and a rottweiler dog producing offspring. Odd, but possible, because they are of the same species.