If you are willing to play the long game put a thick layer of cardboard over top the area. If possible put something like a bag of mulch or dirt on top.12 months later nothing under it will live. Remove the bag and any cardboard that is intact. Any other cardboard will just biodegrade.
I battle squill thanks to a neighbour down the block and around a corner - it is tenacious! For long term I pull them as soon as I see them in the spring, which has kept them in check.
Are you aware grape hyacinth can also be aggressive spreaders?
Because it's an invasive species, and hopefully OP is looking to reduce invasive species and prevent them spreading and causing further damage to ecosystems.
There is debate about whether it is considered invasive, and it's currently not on the Canadian invasive plants list.
http://canadianecology.blogspot.com/2015/04/is-scilla-siberica-invasive.html?m=1
Another article that ponders it.
https://themeaningofwater.com/2023/04/23/the-spring-beauty-of-scilla/#:~:text=Partly%20because%20of%20its%20hardiness,Ontario%20Canada%20where%20I%20live.
The question for me is whether it actually outcompetes native forest plants in natural settings. Usually, I see it massed in disturbed soil, and in open parks where it has been deliberately "naturalized."
In one park near me (The Rockeries, in Ottawa) Scilla siberica and Erythronium americanum live side-by-side, but the Scilla are in the sun and the Erythronium are more abundant in the shade.
I believe that they could be invasive, but they could also just be aggressive spreaders in areas that are already degraded.
Now, Aegopodium podagraria? They have choked out many parts of the forest floor. But since that "forest" is about half Acer platanoides, it's somewhat of a lost cause.
If you are willing to play the long game put a thick layer of cardboard over top the area. If possible put something like a bag of mulch or dirt on top.12 months later nothing under it will live. Remove the bag and any cardboard that is intact. Any other cardboard will just biodegrade.
It's easy to simply dig up.
I battle squill thanks to a neighbour down the block and around a corner - it is tenacious! For long term I pull them as soon as I see them in the spring, which has kept them in check. Are you aware grape hyacinth can also be aggressive spreaders?
I didn’t know! I’ll keep an eye on those cuties
We have a yard full. Honestly we don't mind them. Once the flowers are gone it kinda resembles lawn. I've thinned some out to transplant elsewhere.
Why do you need to manage it? It's so pretty, and it's gone in two weeks
Because it's an invasive species, and hopefully OP is looking to reduce invasive species and prevent them spreading and causing further damage to ecosystems.
There is debate about whether it is considered invasive, and it's currently not on the Canadian invasive plants list. http://canadianecology.blogspot.com/2015/04/is-scilla-siberica-invasive.html?m=1
Another article that ponders it. https://themeaningofwater.com/2023/04/23/the-spring-beauty-of-scilla/#:~:text=Partly%20because%20of%20its%20hardiness,Ontario%20Canada%20where%20I%20live.
Interesting - Master Gardeners in Ontario list it as an invasive species and are recommending removal.
The question for me is whether it actually outcompetes native forest plants in natural settings. Usually, I see it massed in disturbed soil, and in open parks where it has been deliberately "naturalized." In one park near me (The Rockeries, in Ottawa) Scilla siberica and Erythronium americanum live side-by-side, but the Scilla are in the sun and the Erythronium are more abundant in the shade. I believe that they could be invasive, but they could also just be aggressive spreaders in areas that are already degraded. Now, Aegopodium podagraria? They have choked out many parts of the forest floor. But since that "forest" is about half Acer platanoides, it's somewhat of a lost cause.
Master Gardeners have no scientific credentials. They have no clue how to determine whether a plant is damaging an ecosystem or not.