Boo … Another Invasive Plant …

  Beach naupaka (Scaevola taccada), an invasive pest plant, was discovered growing on the edge of a mosquito control dike at the Oslo Riverfront Conservation Area.  Its large, somewhat waxy leaves are yellow-green.  Fast-growing, this one plant was more than six…

Hairy (Yellow) Leafcup – A Sure Sign of Fall

Another sure sign of the advent of Fall at the Oslo Riverfront Conservation Area are the sunny yellow flowers of the tall, perennial plant, hairy leafcup (Smallanthus uvedelia) at the park entrance.  This plant dies back to the ground each…