Thank you! I didn´t know this either... I always thought they are some kind of parasites engulfing the trees. Then a couple of years back, I was fascinated by lichens I found spreading on a tree. Rounder bigger organisms of various vivid colors of yellow, green and bluish shades. I thought of researching and found out that they are good to the ecology. Since I love nature, I decided to post this info in this community so everyone who ever reads would know that these organisms are good to our environment.
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MM intersting! i have some olive trees with what MIGHT be lichens growing on it.. i wasnt sure if i should remove it all or not!.. i have to also do some research!
Oh no no no... please do not remove, just be sure they are lichens, hahaha. I know olive groves from my neighbours in Spain and they all grow in arid lands. That would mean the soil is acidic and olives grow in such areas where the bed is rocky. It is very interesting to know if the "lichens" found on your olive trees are really lichen because that might mean your area is environmentally sound.