Trichostema is a genus of flowering plants in the family Lamiaceae, which are aromatic herbs, subshrubs, or shrubs. These plants are native to North America. Most species in this genus are referred to by the common name bluecurls because of their blue to purple flowers and relatively long, curled stamens.

There are 26 species recognized in the genus. These species are divided into 6 sections based on life history, morphology, chromosome number, and genetics. Research on Trichostema in Florida in the early 2020s concluded that there were 10 species native to the state (previously there were only three recognized). This determination was based on genetic, morphological, ecological, and phenological data.

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