06/09/2026
June is Invasive Species Action Month! Whether you’re hiking, camping, on the water or tending to your home garden, educate yourself and take action to help prevent the spread of invasive species.
One common invasive plant that’s in-bloom this time of year is dame’s rocket (Hesperis matronalis). This slender 3-4' plant with four pinkish-purple (or white) petals spreads quickly in forests, along roads and in natural areas. It is sometimes found in “wildflower mixes” and is a restricted invasive species in Wisconsin, which means it is unlawful to transport, transfer or introduce it on the landscape.
