One of the most lovely perennials you could add to such a garden is a swamp milkweed look-alike — sweet Joe-Pye weed (Eutrochium purpureum). This plant blooms with mauve, fragrant flowers from ...

Despite its aggressive habits, many North American gardeners grow Joe Pye weed because it is an important native plant that supports a plethora of pollinators, including tiger swallowtail and monarch ...

The trust says it is removing about 70 tonnes of the floating weed each week to ensure the "thick carpet" it creates does not harm aquatic wildlife. If left to thrive, thousands of tiny plants can ...