Sometimes when I eat seedless grapes they’re not entirely seedless. Why is that?

A: All grapes (even ‘seedless’ varieties) have seeds. Ordinarily the seeds don’t grow to be more than a seed trace, which is not usually noticeable. Allowing our fruit to ripen on the vine longer ensures that you have the best tasting fruit possible, however it does mean that there is a chance the seed trace could become harder and more noticeable.