They do spread themselves around, but the leaves due down in early summer and if you don’t want the attractive and colourful (but toxic) berries the stems bearing them are easily removed. They are however a good food resource for birds and small native mammals.
Just supervise small children around them.
Gardening in Central Norfolk on improved gritty moraine over chalk ... free-draining.
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aka Arum maculatum
https://www.rhs.org.uk/Plants/1660/Arum-maculatum/Details
Gardening in Central Norfolk on improved gritty moraine over chalk ... free-draining.
I live in west central Scotland - not where that photo is...
Gardening in Central Norfolk on improved gritty moraine over chalk ... free-draining.