Galeopsis, commonly called hemp-nettle or hempnettle, is a genus of annual herbaceous plants native to Europe and Asia. Some species are naturalized in North America and New Zealand.
The plants are poisonous. Several species are widespread weeds and some are used as medicinal herbs.
The large-flowered hemp-nettle or Edmonton hempnettle, is a species of annual herbaceous plants in the family Lamiaceae. It is native to northern + central Europe and Siberia, and has become a widespread introduced weed in Canada. The plant is poisonous and causes paralysis.
This plant might be poisonous
How to get rid of:
Uprooting plants by pulling is another effective method to prevent the spread of herbaceous and floating weeds. This is also effective in some shrubs, annuals, and tap-rooted plants. If you're quite hesitant to do it by hand, weed wrenches can be powerful tools to use. This is especially handy (excuse the pun) when you're trying to get a hold of large saplings and shrubs that are too big to be pulled manually. However, weed wrenches are not as effective against many perennial weeds whose stems are buried deep underground and whose roots re-sprout when left behind.
Some of the advantages of pulling include the minimal damage caused to surrounding plants, small ecological impact, and the low cost. However, it can be tedious and labour intensive, and its effect may only be seen in relatively small areas.