Callery or Bradford pear trees are starting to show up in many eastern forests. Once established, the invasive trees are hard to eradicate, a biologist warns.
from https://www.sciencedaily.com/releases/2019/06/190628182312.htm
from
https://healthnews010.tumblr.com/post/185970951348
from https://johnher1.blogspot.com/2019/06/nonnative-pear-trees-are-showing-up-in.html
from
https://johnher10.tumblr.com/post/185971136377
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