42+ Soil Turning White. If you are referring to a crusty whitish layer on top of the soil when it has dried after watering, it is most likely soluble salts and calcified minerals from your water. The white powder that builds up on the pot and soil is soluble salt.
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Turning soil with a traditional handheld cultivator is pretty hard on my back, but thankfully, that's not the only tool for the job! Spread 3 to 6 inches of compost, leaf mold or composted manure over the garden area. Yes, that white mold growing on the dirt of your indoor potted plants is dangerous for them.
That's the conclusion of a 2017 ucs report, turning soils into sponges.
If you are referring to a crusty whitish layer on top of the soil when it has dried after watering, it is most likely soluble salts and calcified minerals from your water. Leaching will remove excess salts. Is moldy soil bad for plants? Turn damp spots in your yard into a colorful flower border by selecting plants that thrive with lots of moisture.