Common daylily is considered invasive in the Chicago area and is very difficult to eradicate. Dispose of plants and roots through commercial composting to prevent its spread.

The daylily: A most accommodating plant. Published: ; Jul. 02, 2009, 7:13 p.m. By . Catherine Morrison/This Month in the Garden ...

The Asian transplants, brought to North America in the late 1800s, have become so widespread that many mistake them for native species despite their foreign roots.

The names may surprise you — and very likely the plants are all around you — but they don't belong in Wisconsin and they do cause trouble.

This reliable bloomer adds shape and color to the Southern garden. Learn about growing and caring for daylilies.