Nalani Vaughn, owner of Fruitmommy Organic Solutions, watched as her crew of experienced pruners removed deadwood and ...

Today, nearly every citrus grove in Florida is infected with the disease. If an orange tree were to remain untreated, the disease would block its ability to get nutrients and kill it within a few ...

A version of this story appears in the February 2017 issue of National Geographic magazine. Citrus, in many ways, stands alone. So many cultivated species have come from so few primary ancestors.

Among the casualties of the canker war were my grandmother's lime and sour orange trees in Miami. Citrus canker is a disease that creates small lesions on fruit and leaves. The infected fruit ...

devastated crops already thinned by citrus greening, which cuts off key nutrients to orange trees. Trees infected with the disease produce fewer, lower-quality oranges and eventually die.

Citrus is a large ... hybrid origin of sweet orange. Maximum parsimony–based phylogeny construction was performed using heuristic searches that consisted of tree bisection and reconnection ...

uninfected trees were destroyed in Orange County between 2002 and 2006 as part of the Florida Department of Agriculture and Consumer Services’ efforts to eradicate citrus canker, according to ...