These links are to external websites and KYW is not responsible for any content. Remember that herbicide use MUST obey local laws and product label instructions.
Internacional
CABI - Invasive Species Compendium
Plants For A Future
Plants of the World Online
Wikipedia
América del Norte
Lady Bird Johnson Wildflower Center - University of Texas
USDA Natural Resources Conservation Service
Reino Unido e Irlanda
Online Atlas of the British & Irish Flora
Google