This is the time of year that the wildflowers start blooming, but according to this, they’re not going to make much of an appearance this spring. Wildflowers aside, it’s a great time of year to visit, despite the fact that it’s also the busiest time, the park is so huge there’s plenty of room to stay away from the masses while exploring. I’d recommend waking up early (as in just before sunrise) to check out the most popular spots, then you can nap during the heat of the day when everyone else is (ahem) sweating their balls off and waiting in line to get the “perfect” photo op.
Have you noticed that I don’t like crowds? ;)