Citrus growers of Florida and California, and now Texas’ Rio Grande Valley, are battling the bacterial disease huanglongbing, more commonly known as citrus greening, to save their crops.

The Texas citrus industry is small compared to Florida, but the Rio Grande Valley’s oranges and red-fleshed grapefruits have an annual economic impact of $150 million.

Appearing only two years ago in a handful of trees in San Juan, California, the area is now a “hot zone” with alarming numbers of infected trees. The disease is carried by the Asian citrus psyllid and causes misshapen, off-tasting, green-tinted fruit and ultimately kills trees, reports The Fresno Bee.

Texas Citrus Mutual, a growers’ trade group, said the disease had been detected in 430 trees in commercial groves and 207 in residential backyards in Texas as of last week. More than 100 of the infected trees were found in La Blanca, north of Donna, and hundreds more were found in orchards and a former nursery to the south.

Texas growers hope to avoid the kind of devastation Florida has experienced and are taking preemptive steps to help stop the spread of the disease. Hidalgo, Cameron and Harris counties are under quarantine with the U.S. Department of Agriculture (USDA) conducting door-to-door testing. Tree removal services are being offered for homeowners. Commercial growers are encouraged to destroy infected trees.