I'm planting two varieties of watermelon
So this summer I want to plant two different varieties of watermelon. And when harvest time comes, I want to collect the seeds and plant them next year. But I know that two watermelon varieties will cross pollinate, so I was wondering how far do I have to plant the two varieties away from eatchother in order for them not to cross pollinate? I heard of bagging the flowers but I'd rather just plant them far away from eatchother.