Editing Pinus flexilis (section)

=== Threats ===
Limber pine is susceptible to [[white pine blister rust]],<ref name=":0" /> caused by ''Cronartium ribicola'', a fungus that was introduced accidentally from Europe. Limber pine mortality is high in many areas throughout its range, except [[Arizona]], where it has not yet been found. However, there is little hope of controlling the blister rust in existing trees. Research is under way, locating and breeding from the occasional naturally resistant limber pines, and by studying the resistance mechanisms of the European and Asian white pines (e.g. [[Swiss pine]], [[Macedonian pine]]), which are strongly resistant to the disease.

The tree has also been damaged by [[bark beetle]] epidemics, particularly at drought-affected low elevations.<ref name=":0" />