Logwood, a dyestuff extracted from its namesake tree native to the Yucatán Peninsula, was a commodity valued in the textile centres of early modern Europe. The trade in logwood began as an extractive endeavour attempted by merchants and former pirates on the margins of Spanish colonial authority, but by the late eighteenth century it had expanded to become a wide-reaching activity with connections to broader trends on both sides of the Atlantic. In the New World, the trade's growth fuelled Anglo-Spanish imperial rivalries and led to the introduction of slave labour to harvest dwindling logwood stands. The ecological consequences of human exchange also spread logwood's range to Caribbean islands, turning a frontier trade into a domesticated plantation industry. In the Old World, logwood was a versatile dye source that contributed to a range of hues. Initial regulations to protect consumers eased as dyers improved the quality of logwood dyes. The logwood trade expanded global textile supply chains and brought innovation to Europe's proto-industrial textile industry. It gave the continent's dyers new ways to meet consumer demand and spurred the development of mechanical methods to expedite refining.