While Ilex v. 'Southern Gentleman' is best for pollinating southern winterberry varieties, Ilex v. 'Jim Dandy' is a compact male pollinator for all northern types.
One male plant can pollinate many female plants. A good rule of thumb is one male to six females.
One can determine the sex of a winterberry when it is in bloom by examining the small flowers. If the flowers have projecting stamens, it is a male plant. If the flowers only have a rounded bump in the center, then it is a female plant.
'Southern Gentleman' requires no more effort to grow than any other winterberry, looking only for regular moisture, although they are quite adaptable to a range of sites.
'Southern Gentleman' was named and introduced by the nurseryman Bob Simpson, of Vincennes, Indiana.