In 1875 there were 90,000 orange trees growing in California. By 1901 there were 4.5 million, concentrated in Los Angeles, San Bernardino and San Diego counties.

More than two years into a quarantine on citrus trees in much of Southern California, the Asian citrus psyllid continues to spread. This spring researchers discovered the tiny insects on the 140 ...

The oldest orange tree in California today is a Valencia in Valley Center (north San Diego County), planted in 1869. It still produces a respectable crop, ...

In Southern California, a long time has passed since our famed citrus crop dominated the landscape. The orange groves have instead gone to housing developments, nearly every one.

Disneyland was built on a 1,600-acre orange ranch; to make way for Mickey, 4,000 Valencia trees were bulldozed and uprooted. This is one of the jillion tree-related facts crammed into Jared Farmer ...

The Sacramento region and suburbs have many orange trees. The Northern California climate helps the citrus fruit grow, but pests and infestations, such as fruit flies, put the crop at risk.

Standard trees require 16-20 feet of planting space to allow for the size of a mature tree. Some nurseries carry trees that are labeled semi-dwarf, and they will mature to an intermediate size.

Spanish missionaries in San Diego planted the first California orange trees in 1769, but it wasn’t until the 1870s that an endless belt of groves transformed Los Angeles into what became known ...

California growers worry about disease that kills trees The University of California opened its doors in 1869 with just 10 faculty members and 40 students. Today, the UC system has more than 295,000 ...

California is famously home to the oldest, tallest and largest trees in the world. Three national parks there are named for trees, as well as several cities, including Oakland and Palm Springs.

“California was built on the ideal of Spanish-themed orange groves under the moon,” he said. “That’s how it was sold. That brought a lot of people to California.” ...

In 1875 there were 90,000 orange trees growing in California. By 1901 there were 4.5 million, concentrated in Los Angeles, San Bernardino and San Diego counties.