From flower bed into nature...
Photo Arne Ader
Translation Liis
Canadian goldenrod
Canadian goldenrod Kanada kuldvits Solidago canadensis
The Canadian goldenrod grows in our gardens since very long, and as a late summer and long-time flowerer the tall plant is familiar in garden beds and at the outskirts of gardens.
About 25 years ago the Canadian goldenrod was noticed to be taking over at roadsides and on waste lands but also in meadows. By today the invasive goldenrod is one of 13 plant species whose seeds or plants may not be imported and whose sale or planting is prohibited in Estonia: with respect to proliferation we have to do with an alien species similar to the hogweeds that have been fought in our nature already for years.
Alien species that arrive into a new biotope can turn out to be threats, becoming aggressive or dominant. They may crowd out native species and so change our own natural biotopes. In areas where for different reasons the expansion of a foreign species becomes significant, local species may become expansive too (the species starts to proliferate for one reason or another), The reasons are manifold and very varying. Invasive species are studied today by scientists around the world.
In any case ”imported” alien species and their spread must be monitored, noting the periods when the species may start spreading on its own, or starts an expansion, and how it proceeds.
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