Barberries have perfect flowers - they contain both male and female sexual parts - so no such thing as a male plant :-) Any plant can - and usually does - produce berries. And seeds of named cultivars will not necessarily come true to form. It is quite possible that viable germinated seed of 'Helmond Pillar' will develop into a typically rounded, rather than erect, shrub and may not even produce very red foliage. Propagation is typically done from cuttings.

Thanks! I guess I'll be looking for that perfect hedge elsewhere. Do you know of a perfect fence hedge that does not grow over 6 feet and is thin about a foot thick that can be planted close together?