March 12: Very heavy traffic coming into Borrego Springs yesterday and today, particularly on S22 coming through Ranchita and down Montezuma Grade. We expect next weekend to be similar. Visiting on weekdays is a good idea if possible.
The Times of San Diego has an article listing wildflower trip planning and viewing tips at Wildflowers Cause Traffic Jams as Crowds Flock to Borrego Springs
The Press Enterprise reports traffic backing up onto the Freeway at Lake Elsinore wildflowers enchanting enough to cause traffic jam
Best tip: If at all possible do your wildflower viewing during the week.