Fitzsimmons said Penn State helped plant 5,000 chestnut trees this spring, many of them starting off in a greenhouse around the corner from Beaver Stadium. She said many of the saplings would be ...

Standing tall at the confluence of ornamental beauty, wildlife value, and nutritional significance, chestnut trees (Castanea spp.) are the most beneficial trees to grace any yard. Cousins to the ...

As spring slowly arrives in the North, an arborist’s fancy turns to thoughts of trees. It’s true for Jake MacDougall, who ...

Several decades later, we are seeking government approval to begin distributing the first blight-tolerant transgenic American chestnut. These trees were produced by inserting a gene called oxalate ...

From left to right, the trees are a blight-susceptible wild-type American chestnut (C. dentata) called Ellis 1, a blight-resistant Chinese chestnut (C. mollissima) tree called 'Qing,' and two ...