Titan was 47.5 inches tall when measured at 8:30 am. That’s 3 inches of new growth in the past 24 hours. Over the past 5 days, it's daily growth rate has been averaging close to 3.5 inches, with it's overall height going from 30.5 inches to 47.5 inches.
Now, for the $64,000.00 question. Most everyone asks me when the Titan’s inflorescence will open? My best guesstimate is in about a week. I am basing this on information from Eastern Illinois University's H.F Thut Greenhouse Manager Steven Malehorn’s detailed account of the 2008 blooming of the Titan Arum he cares for. His Titan is also from the University of Wisconsin-Madison. When his was of similar height as our Titan is today, the inflorescence of his fully opened about 7 days later.