This mat-forming stoloniferous ornamental is frequently planted in northeastern regions, often persists and may sometimes escapes. In Ky. some of the mapped records may not be from truly naturalized plants in wilder sites. A. genevensis L. is a more erect, non-stoloniferous relative of reptans that may also be expected, together with hybrids (Cr, W); 2n = 32 in both. However, naturalized genevensis in North America remains largely restricted to northeastern regions (K).