supplied in a 7cm pot The leaves and stems produce a natural secretion, tiny opaque dots, called cystolyths. These little crystals are sometimes thought to be pests, but are not harmful. Pipers produce these grainy exudates called cystolyths. These grains do not affect growth negatively, and is a sign that your plant is probably receiving too much light, photosynthesizing much, hence producing too much sugar. These grains are made up of excess sugar and will eventually dry out and oxidize with decrease in humidity leaving tiny black dots that rub off with your fingers

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