Diseases
Unfortunately, Limber Pine is afflicted with White Pine Blister Rust (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 no known way 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.
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