Downtoearthdigs
Answered on September 28, 2015
It may be a residue from potting soil or fertilizer that was used in the greenhouse.
https://www.gardeningknowhow.com/houseplants/ferns-houseplants/growing-ferns-indoors.htm
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00It may be a residue from potting soil or fertilizer that was used in the greenhouse.
https://www.gardeningknowhow.com/houseplants/ferns-houseplants/growing-ferns-indoors.htm
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