I was gifted a few small trees by a friend. One has green moss growing on the top of the soil. Should that be a concern? If so, suggestions on how to take care of that.. I just got some Physan-20 and it seems to indicate it is good for algae, etc. Should I spray a diluted solution on it... or simply not worry about it.
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I've gotten plants from nurseries before with algae on the surface. Can't say whether or not it hurts them but in my own sand growbags last winter, algae formed a mat on the surface of the sand and caused too much wicking of moisture and killed a few newly rooted cuttings. Older plants were not affected. I stopped top watering after that and it went away.
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