Monkeyflower, Mimulus guttatus flower is a tall, upright plant with opposite, slightly fleshy and strongly toothed, sessile or shortly petiolate leaves which produces large, yellow flowers, sometimes with orange markings. It is usually found in wet habitats, growing along streams, ditches, rivers and lakes, in wet pastures; and occasionally on disturbed ground. A native of North America, it has been present in Britain since the mid-19th century. Introductions into new areas could be prevent by gardeners and horticulturalists adopting the Be Plant Wise guidelines.
In suitable habitats it can form very dense stands, possibly to the detriment of the local native flora
Information and Identification Sheets:
UK Distribution Map
We regret that distribution maps via the NBN Atlas are not currently available