It is not known exactly why some cacti produce a blue like substance on the skin. It is theorised that it acts as sort of sunscreen. The cactus featured is a Melocactus azureus, from my person collection.
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From @cryptocereus
It is not known exactly why some cacti produce a blue like substance on the skin. It is theorised that it acts as sort of sunscreen. The cactus featured is a Melocactus azureus, from my person collection.