Near Glendora, three hillsides have produced a rare, purple wildflower super bloom.
This year's record-setting rainfall fed the growth of thousands of Brodiaea filifolia, according to Ann Croissant, a plant physiologist with the Glendora Community Conservancy.
Only seven sizable populations of the flower exist in the world, Croissant told KPCC.
The Brodiaea is Glendora’s City Flower and is native to the area.
Visitors can see the bloom along the Colby Trail, which is open during the daytime, according to the Glendora Community Conservancy website.
A lecture on the rescue and management of the plant will be presented by the San Gabriel Mountain Regional Conservancy on May 20 at the Glendora Library.
"This is something that only happens every 100 years," Croissant said. "We were taking kids out, in fact, to see the super bloom because this may never happen again in their lifetime."
Croissant said for the next few weeks, the Brodiaea should continue to bloom.