I have a garden full of active bumblebees. They fly from plant to plant and infallibly always find flower which has good quality pollen. Will gain pollen from ten plants and flies off. Soon they will return and continue. For me it is terribly difficult to obtain uncrossed seeds. I can not do without bagging.
This year I started giving bags to whole plants at a time when the plants had only the first hints of flowers. After three weeks, I am these big bags removed and put smaller bags on individual inflorescence. When there were miniature fruit, so I removed the bag and marked the fruit from which I will be obtain the seeds.
This is what I did with more than ninety odrůd- terrible work.
Vladimír