|Connecticut Botanical Society|
Photos & Information
Plant ID Guides
Water Shamrock (Water Clover, Pepperwort)
Water shamrock, despite its common name, is not related to shamrocks (or clover or pepper) -- it is a fern. It is native to Europe; it was introduced to America in 1862. It is considered to be potentially invasive in New England, as it may crowd out native wetland plants by forming dense stands. More on this topic from Invasive Plant Atlas of New England.
Water shamrock is an aquatic fern.