This beautifully illustrated book explores sources for botany and gardening in seventeenth- and eighteenth-century Ireland. It investigates the contributions of individuals such as Philip O’Sullivan Beare and Thomas Molyneux in the seventeenth century, and, for the eighteenth century, focuses on the Revd Caleb Threlkeld, whose Synopsis stirpium Hibernicarum (Dublin, 1726) was the first botanical book published in Ireland. Chapters shed light on the books in early eighteenth-century libraries, such as that of Dr. Edward Worth and of Marsh’s Library in Dublin, and demonstrate the impact of the explorations of the Dutch East India Company on knowledge of the flora of distant lands. Nowhere is this more apparent than in the glorious botanical works in the Fagel Collection, bought by Trinity College Dublin in 1802. The changing nature of eighteenth-century gardens and landscapes and the factors affecting their growth and renown bring the book to a close.