This book offers a comprehensive exploration of the Gaelic names of plants, drawing on both Scottish and Irish Gaelic traditions. It delves into the etymology of these names, revealing how Celtic cultures linked plant names to their practical uses, appearance, habitats, and associated superstitions. The author meticulously researched existing vocabularies and undertook extensive fieldwork among Gaelic-speaking communities to compile a complete catalogue of Gaelic plant names, a task that spanned nearly a decade. This meticulous work includes a significant number of Irish Gaelic names, reflecting the rich linguistic heritage shared between Scotland and Ireland. The book also features comparative Welsh names and examines the influence of Celtic folklore and legends on plant nomenclature. By analyzing the naming conventions of these Celtic traditions, the author sheds light on the depth of botanical knowledge and cultural significance embedded within the Gaelic language, making this a valuable resource for scholars and anyone interested in Celtic history, language, and folklore.