White stuff under the soil on potted plant.
I lifted my bonsai tree from its pot to see how wet or dry it was, but found a surprise. I watered the plant a couple of weeks ago and no white stuff was there then, so it must have come during these few days. The plant looks healthy as of now, but I want to make sure that this residue won't hurt it.
Outside United States
What country do you live in? If you tell me your location I can better route your question to the appropriate expert.