Tucson in Pima County, Arizona — The American Mountains (Southwest)
Where Have All the Saguaros Gone?
In February 1937, a cold front brought record low temperatures to Tucson. A few years later saguaros began to die at an alarming rate. For a decade, scientists and the public struggled to deal with the "cactus blight." Following another killing freeze in 1962, researchers realized that temperatures below freezing for more than 20 hours could kill saguaros.
Before 1980 almost no young saguaros could be found here. Predictions of doom were made: "the last saguaro will die in the 1990s." In 1979, the National Park Service acquired all grazing rights in the Cactus Forest. After decades of trampling by cattle, young saguaros began to sprout under palo verde and mesquite "nurse trees." The trend toward renewal continues today.
Saguaro in 1935
Saguaro in 1960
Saguaro in 1985
Erected by National Park Service.
Location. Click for map. The marker is on Cactus Forest Drive inside of Saguaro National Park East. Marker is at or near this postal address: Cactus Forest Drive, Tucson AZ 85748, United States of America.
Other nearby markers. At least 8 other markers are within 9 miles of this marker, measured as the crow flies. Home for Saguaros (approx. 1.2 miles away); Desert Homes (approx. 2.6 miles away); Officer Erik Hite (approx. 4.4 miles away); Agua Caliente Ranch and Hot Springs (approx. 5.7 miles away); Airmen Memorial Bridge (approx. 6.9 miles away); Hacienda Moltacqua (approx. 7.3 miles away); Lockheed SR-71 Blackbird (approx. 8.8 miles away); Presidential Aircraft (approx. 8.9 miles away). Click for a list of all markers in Tucson.
Categories. • Environment • Horticulture & Forestry •
Credits. This page originally submitted on , by J. Makali Bruton of Querétaro, Mexico. This page has been viewed 210 times since then and 3 times this year. Photos: 1, 2. submitted on , by J. Makali Bruton of Querétaro, Mexico. • Andrew Ruppenstein was the editor who published this page. This page was last revised on June 16, 2016.