Knowledgebase
More "spreading" native plants to identify and control #867701
Asked May 09, 2024, 10:35 AM EDT
Chisago County Minnesota
Expert Response
The picture on the left 5427 is Canadian Goldenrod https://www.minnesotawildflowers.info/flower/canada-goldenrod BTW, it came from Europe.
THe other picture is Giant Hyssop https://www.minnesotawildflowers.info/flower/yellow-giant-hyssop This one is on my property and seeds like crazy.
Fortunately both plants are easy to pull out.
The solution here is to thorough clear the area (put all weeds in compost bags not on your compost pile!) and then apply 4-5 inches of mulch over the area and then replant through the mulch.
Alternatively you can pull out plants as above and then solarize for six weeks, cover with mulch. This is somewhat more effective.
https://extension.umn.edu/planting-and-growing-guides/solarization-occultation#:~:text=What%20is%20solarization%3F-,Solarization%20is%20the%20process%20of%20placing%20a%20clear%20plastic%20tarp,pathogen%20populations%20in%20the%20soil.
The picture on the left 5427 is Canadian Goldenrod https://www.minnesotawildflowers.info/flower/canada-goldenrod BTW, it came from Europe.
THe other picture is Giant Hyssop https://www.minnesotawildflowers.info/flower/yellow-giant-hyssop This one is on my property and seeds like crazy.
Fortunately both plants are easy to pull out.
The solution here is to thorough clear the area (put all weeds in compost bags not on your compost pile!) and then apply 4-5 inches of mulch over the area and then replant through the mulch.
Alternatively you can pull out plants as above and then solarize for six weeks, cover with mulch. This is somewhat more effective.
The issues have to do with sun/shade, moisture in the ground, and also creating a full season of blooms from May to October.
Here are some good resources for you.
https://bwsr.state.mn.us/residential-pollinator-habitat
https://extension.umn.edu/lawns-and-landscapes/flowers-pollinators
https://northerngardener.org/building-a-pollinator-garden/
https://beelab.umn.edu/pollinator-garden
https://bwsr.state.mn.us/l2l
There is a tremendous garden store in Scandia.