Aquacide Blog — Watercress

Watercress (nasturtium officinale) is native to Eurasia, imported to the U.S. as a spicy cooking herb.  It is a healthy low-calorie vegetable that when neglected can be a problematic invasive weed.  Watercress is an emersed weed found in shallow areas near the shoreline.   It has alternate leaves with the end leaf not paired and a cluster of white 4-petaled flowers that rise above the top of the weed. Cutting only makes the problem worse. 1)      Dig up Watercress root and all before it begins to flower.  Remove weeds to an area away from shoreline and allow it to dry. 2)     ...