organic sulphur?

64yoda

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I think I might have a Potassium deficiency most definitely in my 2 organic autoflower grows. This I am working on, since I have a seaweed fertilizer (not kelp, although I have that too), that is just K and micronutes.

But it also looks like there may be a Sulphur deficiency. Does anyone know if there's such thing as something organic I can use that has high levels of Sulphur?

If the only way to do this is to work something into the soil, any suggestions on how to do that while the plants are already over 2 months old would be greatly appreciated. Thanks!

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pcduck

Feed the soil, not the plant
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Gypsum, potassium sulfate, langbeinite, and Epsom salts will give you sulfur organically.
 

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