To the Editor:

In response to Mr. DiPasquale’s letter last week (“Wrong Milkweed,” 1/21), Mr. Pasquale is correct concerning growing tropical milkweed; however, it is an annual and will naturally die off in the winter in this area, thus creating no problem with disease or lingering, dying monarchs.

Actually the Northeast monarchs have a low percentage of OED because of the cold winters. Mr. DiPasquale is also correct concerning trimming the milkweed.

January 28, 2015