You are at the nursery and have found a nice looking plant. Is it safe to bring home? Your friend has some extra plants and offers to give you some – should you take them? In both cases you can get into a lot of trouble by taking the plant home.
This is a list of invasive plants you should never, never, never add to your garden–unless you want them everywhere.
Nurseries should be restricted from selling them to unsuspecting customers.
What is an Invasive Plant?
An invasive plant has two common characteristics. It spreads fairly quickly either by seeds or a running root system. Secondly, the root system is near impossible to remove. Any small bit of root left in the soil will grow again.
This is by no means an exhaustive list, but it does contain some of the worst of the worst. I have struggled with almost all of them.
As one of the commenters below points out, invasiveness is regional. Something that may be invasive in zone 5 may not grow in zone 8, for all kinds of environmental reasons. This list of plants is invasive in zone 5, Ontario, in clay-type soil, and probably most of Northeastern North America.
Goutweed (Aegopodium podagraria)
Lily-of-the-Valley (Convallaria majalis)
Chameleon Plant (Houttuynia cordata)
Ribbon Grass (Phalaris arundinacea)
Periwinkle (Vinca minor)
Mint (Metha species)
Lyme Grass (Leymus arenarius)
Bell Flower (Campanula punctata)
1) Goutweed (Aegopodium podagraria) Photo: Funki Sock Munki
2) Lily-of-the-Valley (Convallaria majalis) Photo: yamaken
3) Chameleon Plant (Houttuynia cordata) Photo: Sunchild57 Photography.
4) Ribbon Grass (Phalaris arundinacea) Photo: Learn to Grow
5) Periwinkle (Vinca minor) Photo: Patrick Standish
6) Mint (Metha species) Photo:
7) Sedum acre Photo: Sólveig Zophoníasdóttir
8) Lyme Grass (Leymus arenarius)Photo: Thompson & Morgan
9) Running Bamboo Photo: Heather Bailey
10) Bell Flower (Campanula punctata) Photo: Qwen Wan