i went for a lovely walk in rock creek park with the mister and oto today. the green canopy is so high, made up of many very tall trees including tulip poplar and sycamores. the ground was covered in a thick, cush-y emerald plant: marsh marigold. marsh marigold will be covered in yellow blooms in a few weeks, even in shady areas. it is a native flora in maryland, and also sold at nurseries and online as a quick, fast growing ground cover for difficult garden spots. it seems a little aggressive. best in bogging-type areas. i also saw mayapples in bloom.