"Nancy" writes:
I have grown cauliflowers for years with great success.
This year they are all turning purple when they are about
half matured.
I wonder if anyone has any idea why.

Are these from seedlings that you purchased? If so, they may be the
new novelty variety that really does bear purple hearts. Is the colour a
dark shade of purple, not just a pinkish tinge? Perhaps the nursery got
the labels mixed up.
--
John Savage (my news address is not valid for email)