TLDW:
A fungus called “white pine blister rust” can only pollinate in the presence of white pine trees and “ribes” (pronounced rye-bees), which is what currants and gooseberries are. The lumber was deemed far more valuable so in order to save it from the spread of the fungus, cultivation of ribes was outlawed and the US Government enacted a large scale eradication.
TLDW: A fungus called “white pine blister rust” can only pollinate in the presence of white pine trees and “ribes” (pronounced rye-bees), which is what currants and gooseberries are. The lumber was deemed far more valuable so in order to save it from the spread of the fungus, cultivation of ribes was outlawed and the US Government enacted a large scale eradication.