Are there male and female saskatoon bushes?

Saskatoon bushes (Amelanchier alnifolia) are generally considered to be dioecious, meaning that there are both male and female plants. However, many cultivated varieties are self-fertile, allowing a single bush to produce fruit without needing a partner. To ensure optimal fruit production, it's beneficial to plant both male and female plants in proximity. This can enhance cross-pollination and increase yields.