Why does your Pachycereus pringlei have white cottony spots? Diagnose the cause and fix it with our step-by-step guide.
Small, white, waxy insects attach to the ribs of the Pachycereus pringlei to suck sap, leaving behind white, cotton-like masses. Over time, this weakens the cactus and can lead to stunted growth or fruit drop.
These pests produce a white, powdery secretion that looks like tiny tufts of cotton, often found in the crevices between the cactus ribs or near the areoles. They thrive in humid conditions and can spread rapidly through a collection.
A specific type of scale that produces much larger, more prominent white felt-like patches compared to other species. While common on citrus, they can infest large cacti if the environment is favorable.
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