Common name: forget-me-not
Synonyms and Other Names: Myosotis palustris, Water Forget-me-not, Yelloweye forget-me-not, Scorpion Weed, Love-me, Marsh Scorpion Grass, Mouse-Ear Scorpion Grass, Snake Grass
available through www.itis.gov
Identification: Plant: erect, perennial, 4"-24" tall forb, stems hairy, often creeping; roots fibrous
Flower: blue with a yellow center, 5-parted, 1/4"-3/8" wide, petals flat at the top of the tube, calyx with flat, tight hairs, the lobes much shorter than the tube; inflorescence a terminal, curving, branched cluster (cyme); blooms May-Sept.
Fruit: smooth, shiny nutlets on spreading stalks Leaf: alternate, stalkless, hairy, evergreen in ponds.
Size: 6 to 12 inches tall (15-30 cm), 9 to 12 inches spread (22-30 cm)
Native Range: Europe, Asia (Native to moist meadows and stream banks from Europe to Siberia)
Hydrologic Unit Codes (HUCs) Explained
Puerto Rico &
Interactive maps: Point Distribution Maps
Table 1. States with nonindigenous occurrences, the earliest and latest observations in each state, and the tally and names of HUCs with observations†. Names and dates are hyperlinked to their relevant specimen records. The list of references for all nonindigenous occurrences of Myosotis scorpioides are found here.
Table last updated 5/25/2018
† Populations may not be currently present.
* HUCs are not listed for states where the observation(s) cannot be approximated to a HUC (e.g. state centroids or Canadian provinces).
Ecology: Habitat: wet; shores, shallows, streambanks, springs. It blooms from May-October in temperate climates.
Means of Introduction: Intentionally introduced for ornamental and medicinal cultivation, garden escapes
Status: Introduced - naturalized; ecologically invasive; widespread, of low concern
Impact of Introduction: Competes with native plants in wet habitats, valued for medicinal properties. Like other wetland plants, water forget-me-not offers resting places for aquatic winged insects such as caddis flies and alder flies. It also has nectar and pollen for bees. This plant is found partly submerged in or beside fresh water but also grows in marshes and fens. It makes an ideal plant for pond margins or a bog garden.
References: (click for full references)
Connecticut Botanical Society. http://www.ct-botanical-society.org/galleries/myosotisscor.html
GRIN Taxonomy for Plants. http://www.ars-grin.gov/cgi-bin/npgs/html/taxon.pl?24815
M. Germ and A. Gaberscik. 2003. Comparison of aerial and submerged leaves in two amphibious species Myosotis scorpioides
and Ranunculus trichophyllus
. Photosynthetica 41 (1): 91-96.
Natural England. http://www.plantpress.com/wildlife/o843-waterforgetmenot.php
Plant for A Future. http://www.ibiblio.org/pfaf/cgi-bin/arr_html?Myosotis+scorpioides
USDA, NRCS, PLANTS Database, plants.usda.gov. National Plant Data Center, Baton Rouge, LA 70874-4490 USA
Cao, L., and R. Sturtevant
Revision Date: 7/1/2014
Cao, L., and R. Sturtevant, 2019, Myosotis scorpioides L.: U.S. Geological Survey, Nonindigenous Aquatic Species Database, Gainesville, FL, https://nas.er.usgs.gov/queries/FactSheet.aspx?SpeciesID=2686, Revision Date: 7/1/2014, Access Date: 6/25/2019
This information is preliminary or provisional and is subject to revision. It is being provided to meet the need for timely best science. The information has not received final approval by the U.S. Geological Survey (USGS) and is provided on the condition that neither the USGS nor the U.S. Government shall be held liable for any damages resulting from the authorized or unauthorized use of the information.