Comments regarding Plant World Seeds

This company appears to ship seeds globally, which are invasive and harmful outside their native range. Example, garlic mustard:
//www.plant-world-seeds.com/store/view_seed_item/4428
Many are aware of invasive A. petiolata (Garlic Mustard)'s harmful effects in North America; for those who are not here is one of many examples: Much as the Monarch (Danaus plexippus) relies on Milkweed (Asclepias spp) habitat for survival, the endangered West Virginia Whlte (WVW) butterfly (Pieris virginiensis) relies on native herbaceous Toothworts as its larval host plants. The WVW is more likely to inadvertently lay eggs on invasive garlic mustard leaves than on those of its native toothwort host. P. virginiensis larvae deposited on the leaves of garlic mustard do not survive. Please consider the health of local ecosystems - check that any seed material considered for purchase has not been shown to escape cultivation, and create harmful impacts to native biodiversity, when planted outside its native range. #lovebiodiversity #stopthespread

"On May 30, 2017 3:20 PM, Plant World Seeds responded with:

We sell seeds all over the world as you say - and we can't have hundreds of exemptions for every country. A few countries have specific lists of prohibited items but not everywhere. Garlic mustard is common in a large part of the world and sold as such by many countries.Surely it is the the responsibility of the gardener in a particular country to check?

If you applied for an USDA permit to import these seeds you would see that they would not be permitted, but a similar customer in France (for example) would have no problem. "