Many late summer wildflowers are loving the hot and wet weather we’ve had recently. I’ve noticed Jeruslaem artichoke, wingstem, and common sneezeweed thriving along trails in the Des Moines area.
This week’s featured Iowa wildflower is native to most of North America east of the Rocky Mountains and typically grows in wet habitats, including roadside ditches as well as higher-quality wetlands.
I took all of the enclosed photos of Common boneset (Eupatorium perfoliatum) near the Windsor Heights bike trail, behind the Iowa Department of Natural Resources building on Hickman Road.
As a bonus, I’ve included at the end of this post some pictures of goldenrods with bizarre leaf clusters. I found them growing in Colby Park, near the other end of the Windsor Heights trail. Naturalist and photographer Leland Searles told me the strange foliage comes from a disease called aster yellows. Caused by a “bacterium-like organism called a phytoplasma,” aster yellows can affect some 300 different species, including common food crops and garden plants. Experts recommend removing infected plants as soon as possible, so keep that in mind if you see signs of aster yellows in your yard.
Continue Reading...