It has tubers. Shoots up in early spring and flowers like the picture. Then completely disappears underground by summer. Spreads quickly.
If it stayed green for the summer i'd consider keeping it and trying to control. But given what I've found out, it's getting a nice drink of glyphosate today.
It can quickly take over a forest...
And like many invasive species, they bloom early and choke out native plants.
It's also known as "Fig Buttercup" and "Brazen Hussy". For some reason, it's still being sold by some irresponsible nurseries.
For more reading if you are so inclined...Ohio Birds and Biodiversity: Lesser Celandine: A botanical disaster
Japanese knot weed is a fucker in Ireland, you see it all over the place in Kerry, it has a little white flower that looks alright I suppose but it chokes the fuck out of everything, ruin your house as well.
Horrible shit will spread when you try to cut it down, can grow back from nothing.
Really is a cunt of a weed, japanese bastards.
