On: Black currants were banned in the USA (2017)

[vjk800]

Pines and black currants both grow here in (Northern) Europe. How come the fungus isn't a problem here?

[bstpierre → vjk800]

> Some varieties of European and Asian pines have this innate resistance because they evolved alongside the fungus. However, American trees met this threat too late to develop a workable defense.

[masklinn → bstpierre]

So similar to e.g. phylloxera, chestnut blight, “dutch” elm disease, …

[timeon → masklinn]

Yes most European vineyards are now grafted on American rootstock.

[pmx → vjk800]

This is covered in the article. European pines evolved alongside the fungus so they have a natural resistance to it.

[happymellon → vjk800]

As the article states, European pine has a natural resistance.