is one of the best sites for tracking desert bloom periods. The link is to the "flora" page but there is lots more info if you start at the home page. You can track the wildflower season for any southwestern desert. Death Valley is the lowest in altitude and therefore the earliest to bloom, usually starting late Feb through early April. If you click on "2008 Wildflower Reports
" you actually get the 2009 preseason reports. Click on Death Valley and you get a 1 Jan 2009 update suggesting that some early rains this winter might trigger a good season there.
We were there a couple of years ago in mid Feb but there was no rain that winter and as a result there were almost no flowers and none expected for the entire season. There are also lots of pictures of last year's flowers on this page.
It may already be too late to make nearby reservations. The wildflower season at Death Valley is a big event and lodges fill up early on speculation that the rains will cooperate.