Monday, Jan. 21 at 6:30 pm at peoples United Methodist Church in South Thomaston: The days are lengthening. Spring will come. So will Invasive Plants. Learn more about these marauders from Hildy Ellis of the Knox-Lincoln Soil & Water Conservation District. You, too, can recognize and eradicate plants such as giant Hogweed which can grow five feet tall and more and burn the skin with its sap. Presentation of the Friends of the Weskeag.