By Madeleine Lyman
Before the arrival of Columbus, the only variety of apple native to the U.S. was the crabapple. Originally spread around the world via animal droppings, apples were first widely cultivated in orchards by the Romans. Today, there are about 7,500 varieties grown throughout the world.
Fireblight is a common bacterial disease that can kill the blossom, shoot, or limb of a tree, or sometimes the entire apple tree. Continue reading