The recent heavy rains in the California desert have given us hope that the upcoming wildflower season will be better than in recent years. On December 15th and 17th of 2008, the Anza-Borrego Desert State Park and Joshua Tree National Park received heavy rain. In the higher elevations at Joshua Tree NP it even snowed; the desert there has become a winter wonderland in some areas. Historical rainfall records in Anza-Borrego Desert State Park, Joshua Tree National Park and Death Valley National Park show that 2008 had more rainfall than in previous years. This data is an early indicator that Spring 2009 may provide a good wildflower showing.
The next two months will show us if a full bloom in the desert areas will really arrive. Rainfall that arrives too early or too late doesn’t help the wildflower season. After heavy, seasonal rains, most annual desert plants germinate very quickly. Temperatures also play a critical part, and timing is everything. Frost can decimate delicate new plants.
A phenomenal bloom in terms of the abundance and variety of flowers will depend on more rain, and not too many days of frost.
Exceptional wildflower displays in the desert regions are few and far between. Really good displays occur only once every 10 to 20 years. It’s challenging to speculate on which seasons will be better than others. The number of blooms and variety of colors differ from year to year even at the same location. The attached images of Henderson Canyon Rd. in Anza-Borrego Desert State Park show the extreme differences between a year with a lot of rain and a year with very little of it.
Rainfall occuring between the months of September and March affects the outcome of the desert wildflower season in the following spring. The historical rainfall data for the last few years at three parks is included below. This data indicates that the upcoming 2009 wildflower season will be better than the last two years, based on the increased precipitation in each park.
Anza-Borrego Desert State Park
2008 Yearly Rainfall
As of Dec. 19th 2008 more rain expected next week.
5.91 inches
2007 Yearly Rainfall
1.42 inches
2006 Yearly Rainfall
0.18 inches
Joshua Tree National Park
2008 Yearly Rainfall as of Dec. 19th 08
5.63 inches
2007 Yearly Rainfall
2.47 inches
2006 Yearly Rainfall
0.54 inches
Death Valley National Park
2008 Yearly Rainfall
3.35 inches
2007 Yearly Rainfall
0.0 inches
Phoenix, Arizona
2008 Yearly Rainfall as of Dec. 21st ’08
6.26 inches


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Thanks Lynn for joining my group! Thank you for all the encouragement you have given me!
Happy Trails until w...12:02 PM PST