Question

one of the most common diseases of poinsettias is ______.
a. blight
b. root rot
c. flower drop
d. none of the above

Explanation:

To determine the answer, we recall that root rot is a common disease affecting poinsettias, often due to overwatering or poor drainage. Blight and flower drop are less typical primary diseases for poinsettias compared to root rot.

Answer:

b. root rot