Lesser Celendine (Ranunculus ficaria) Season Manual Mechanical Chemical remove all bulbets be careful to aviod soil disturbance yes Tools Application Notes Apply a 1.5% rate of a 39 to 41% glyphosate isopropylamine salt (e.g., Rodeo® for wetland areas) mixed with water and a nonionic surfactant to foliage. temperature is above about 50 degrees Fahrenheit, and no rain is anticipated within 12 hours paint late winter-early brush or spring (March through a plastic May) to avoid impact spray on native wildflowers bottle Best Chemical Brandname glyphosate isopropylamin e salt Rodeo® for wetland areas Repeated Treatments Ecological Dangers Likely To minimize impacts to sensitive-skinned frogs and salamanders, some experts recommend applying herbicide in March and then switching to manual methods. Source: April 8th, 2008 Northern Virginia Conservation Trust Report compiled by Elan Margulies, Ecological Restoration Intern Under the direction of Whitney Bailey, Director of Stewardship Plant Conservation Alliance®s Alien Plant Working Group Weeds Hone Wild: Alien Plant Invaders of Natural Areas http://www.nps.gov/plants/alien/