<p>A plant that is capable of uniparental reproduction should be a better coloniser than one without that capability, because one individual can establish a persisting population. This advantage, formulated as Baker’s law, can bias which species become invasive. Further, within predominantly biparentally reproducing species, this advantage can also lead to selection of individuals with uniparental reproduction during invasion. While studies have shown that invasive species tend to have uniparental reproduction, the reproductive strategies of non-invasive species occupying the same, and often disturbed, regions are understudied. Hence, to better understand the relationship between reproductive strategies and invasion, we experimentally assessed and compared the mating systems of 11 invasive, eight alien non-invasive and nine native species in India. All these species belong to the predominantly self-incompatible family, Asteraceae. In addition, we assessed whether the mating systems of the extremely invasive <i>Ageratum conyzoides</i> and <i>Bidens pilosa</i> differ between Mexico, where they are native, and India, where they are invasive. All the invasive Asteraceae assessed experimentally were found to have a mode of uniparental reproduction, whereas most of the natives and alien non-invasive species were self-incompatible. The mating systems of <i>A. conyzoides</i> and <i>B. pilosa</i> were self-incompatible in their native range and self-compatible in India, consistent with evolution due to selection of self-compatible lineages during invasion. The study robustly supports Baker’s Law, such that among Asteraceae in southern India, those that are invasive are uniparental, while those that are not invasive follow the family’s tendency toward self incompatibility.</p>