September 25, 2026
KNOT GRASS
The Centinode, or Knot Grass (Polygonum aviculare) derives its name from the knottiness of its stem and its Grass-like leaves. In ‘A Midsummer Night’s Dream,’ Shakspeare refers to this plant as “the hindering Knotgrass,” because its decoction was, in olden times, believed to be efficacious in stopping or retarding the growth of children, as well as of the young of domestic animals. Thus, in Beaumont and Fletcher’s ‘Coxcomb,’ we read:—
“We want a boy,
Kept under for a year with milk and Knotgrass.”
Gerarde says that “it is given unto swine with good success when they are sick, and will not eat their meat, whereupon country people do call it Swine’s-grass or Swine’s-skir.”