Wood Spurge? (Euphorbia amygdaloides

I am guessing as too its true identity it grows along the fringes in our garden.  We border woods and so never planted it.
There are many cultivars of spurge  but it still is a wild plant. And an unusually pretty one,  especially through the spring.
We have poor soils here, therefore it will thrive, living as it does as I said previously, on the fringes under a hedge of thornless blackberry, which we did plant