Common name Milk thistle, blessed milk thistle, Mary thistle, holy thistle, variegated thistle Scientific name: Silybum marianum History & Introduction Native to the Mediterranean region, milk thistle has since been … Read more
Common names: Water spangles, common salvinia, common watermoss Family: Salviniaceae Life form: Aquatic fern History & Introduction Given its rapid growth and attractive floating leaves, water spangles has been a … Read more
Common names: Ragged robin, cuckoo flower, meadow campion Family: Caryophyllaceae Life form: Herbaceous perennial History & Introduction Ragged robin (Silene flos-cuculi) is native to Europe and western Asia, where it … Read more
Common names: Cutleaf teasel, Cut-leaved teasel, Family: Dipsacaceae Life form: Biennial forb History & Introduction Cutleaf teasel is native to Europe and temperate parts of Asia. Although no stranger to … Read more
Common names: Japanese chaff flower, chaff flower, Family: Amaranthaceae Life form: Perennial herb History & Introduction Chaff flower was first reported in the United States in 1981, where it … Read more
Common names: Johnson grass, Johnsongrass Family: Poaceae Life form: Perennial grass History & Introduction Johnson grass was originally a Mediterranean grass, native to parts of Europe, Africa, and Turkey … Read more
Common Names: Kurinso, Japanese Primrose, Candelabra primrose, Valley Red, Japanese Cowslip, Queen of Primroses Family: Primulaceae Life form: Perennial forb History & Introduction Kurinso derives its name from its native … Read more
History and Introduction Yellow garden loosestrife is native to Eurasia, and is considered rare in parts of Bulgaria. It was introduced to the United States through the horticulture trade as … Read more
History & Introduction Macleaya cordata, commonly referred to as plume poppy, is a native species to Japan, eastern China, and parts of Taiwan. In China, the plant is used as … Read more
History & Introduction Water lettuce (Pistia stratiotes) is an invasive freshwater species known for its ability to create dense surface mats in aquatic ecosystems. This plant poses significant threats to … Read more