MJ ^__^

Lisa Marie Presley just sent a "thank you" bouquet to the florist that decorated Michael Jackson's tomb with sunflowers -- because if there's one thing a florist needs, it's più flowers.

TMZ has learned Presley sent the fiori to sunflowerguy.com -- along with a personalized card that said, "Thank te so much for donating the beautiful flowers."

As we previously reported, the florist sent più than 1,500 sunflowers to Forest Lawn Cemetery on Friday , after Lisa Marie begged MJ's fan to do a better job of decorating Michael's tomb.