Did Joe DiMaggio ever confirm sending flowers to Marilyn's grave?

Someone sent fresh flowers to Marilyn Monroe’s grave
twice a week for years. Joe DiMaggio is the person who
is supposed to have sent them. I had heard that DiMaggio
never confirmed nor denied this, but all the references
I can find claim it as a fact.

It would have been consistent with DiMaggio’s character
not to have confirmed or denied the rumor. DiMaggio was
shy, and rarely talked to the press after he retired
from baseball. His marriage to Monroe was a sensitive
subject for him, and even his friends didn’t talk to
him about it. He rarely showed emotion in public.

So, which is it? Did DiMaggio ever admit to sending
the flowers, or is it just a rumor?

This sounds like it was more than just a rumor.

http://www5.cnn.com/COMMUNITY/transcripts/2000/10/25/cramer/

In high school, the mother of a friend of mine worked for Joe DiMaggio - I think as a manicurist. IIRC, she confirmed this rumour to me.