The primary “invasive species” we use for fibre is Dog Strangling Vine (DSV), a plant native to Eurasia, collected with stewards in Tkaronto and Tiohtià:ke-Mooniyang-Montréal. DSV is related to the native milkweed and grows in colonies which crowd out native plants and disrupt the life cycle of monarchs. Monarch caterpillars rely on milkweed to successfully reproduce because milkweed serves as a nursery for their young. When the monarchs mistakenly lay their eggs on DSV, the baby caterpillars are not able to reach maturity as butterflies and migrate to the pine-oak forests across the state of Michoacán, Mexico.