Barberry and Ticks
You might not want this deceptively attractive plant in your yard if you have dogs or cats.
A study by University of Connecticut shows that areas with the presence of Berberis thunbergii are more likely to have Lyme disease-carrying ticks:
Williams recites the numbers. ”When we measure the presence of ticks carrying the Lyme spirochete (Borrelia burgdorferi) we find 120 infected ticks where Barberry is not contained, 40 ticks per acre where Barberry is contained, and only 10 infected ticks where there is no Barberry.”