One of the most majestic trees in Pennsylvania is the tulip poplar (liriodendron tulipifera). You can easily identify tulips by their tall, straight trunks, gray-white grooved bark, and the ...
It’s an early morning in late summer, and as commuters zip down Rock Creek Parkway—through its thick canopy of American beech, oak, and tulip poplar—one man is slowly circling a massive oak tree, ...
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