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 ...

If you are noticing droopy, dried-out flower clusters on your pears, Asian pears, quince, apples or crabapples, fire blight may be the cause. Fire blight is caused by a bacterium and is a common and ...

In the summer of 1904, American chestnut trees in the Bronx were in trouble. Leaves, normally slender and brilliantly green, were curling at the edges and turning yellow. Some tree limbs and trunks ...