Answer: The mushrooms indicate that something is decomposing in the soil. If you're using potting soil that has shreds or chips of wood incorporated, that's probably what's decomposing and feeding the mushrooms. If you're using garden soil and you don't think there are any big chips of wood in it, the mushrooms may be growing because the root system of your spruce is dying. If that's the case, the drainage might not be adequate and the roots are suffering from root rot. You can unpot the tree, cut away any dead or dying roots and then repot in fresh soil. (Healthy roots are creamy white inside; dead or dying roots will be brown or rust colored). Hope this information helps you get to the bottom of the problem!
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