This isn&#x27;t a totally new phenomenon either. I used to ride this stretch of the Metro to work every day back in 2009-2012, and I remember seeing these plants back then too. At the time they hadn&#x27;t really taken hold at Cleveland Park, but Woodley Park was overrun with them.<p>These stations also had a tendency to flood during particularly heavy rains, so it&#x27;s no surprise that questionable drainage is the culprit.<p>It&#x27;s interesting to note that these stations get no natural light where the ferns are growing. It&#x27;s all manmade light.