Alcea "Alcea" species are used as food plants by the larvae of some Lepidoptera species including "Bucculatrix quadrigemina" and "Vanessa cardui", the painted lady. The mallow flea beetle ("Podagrica fuscicornis") is a pest that makes tiny holes in the leaves. Cutworms, aphids, and capsid bugs use the plant as a food source in hotter and drier conditions. A number of weevils use "A. rosea" as their host plant, including "Rhopalapion longirostre", "Alocentron curvirostre", and "Aspidapion validum". The plants are also susceptible to the pathogenic fungus "Puccinia malvacearum", the hollyhock rust. A hollyhock flower, known in Japan as , was incorporated into
Tricolia rosea Wales and Tasmania. Tricolia rosea Tricolia rosea, common name the rosy pheasant, is a species of small sea snail with calcareous opercula, a marine gastropod mollusk in the family Phasianellidae, the pheasant snails. The height of the shell varies between 2 mm and 5 mm. The minute shell is thin, shining and has an ovate shape. It has a uniform deep rosy color throughout. The four whorls are somewhat flattened at the upper part, then convex. The columella is white. The edge and the outer lip are stained with a line of dark rose. This marine species occurs off Western