Blue Moon Wisterias. This species is often referred to as Kentucky Wisteria because it is native up the Mississippi River valley. This native wisteria with 12” racemes of very soft bluish lavender flowers in late April here. The native Wisterias are somewhat more restrained in their growth habit than the Asian species, but none the less, they are quite vigorous. Because of their later blooming characteristics, they are rarely hurt by late frosts, which often beguile the foreigners. Great subjects for arbors, trellises and fences.