Desert blooms
Joshua Tree, Death Valley, and Saguaro can produce striking spring blooms, usually from late winter into spring, and stronger in wet years. Strong blooms draw crowds, so go early and midweek.
Alpine meadows
Mount Rainier's Paradise and the high country at Rocky Mountain and Glacier peak roughly mid-July into August, later in high-snow years. This window overlaps with the summer crowd peak.
Check local bloom reports
Because timing shifts each year, pair your plan with current bloom and trail reports rather than fixed dates.
