The bush honeysuckles, genus Diervilla are small native American shrubs that are not the same as the weedy honeysuckles in the genus Lonicera, but they are related to weigelas. They can be recognized the opposite, toothed leaves along slender twigs and clusters of tubular yellow flowers with long stamens and pistils protruding from the flowers. The fruit is a dry capsule with long filaments. Plants can spread by suckers and may form colonies. Diervilla lonicera is the most wide-spread of the three species, found is eastern Canada, eastern and central U.S., including Illinois. The yellow flowers turn reddish-orange as they age. Fall color is reddish-purple. Bush honeysuckles, native to dry woods and clearings, are adaptable to many soils, including clay, and will grow in sun or partial shade. They bloom starting June, and continue sporadically until September.