Sulfate of Potassium- okay for organic gardening?

ARgardener · February 7, 2017

Alright, so my soil is quite low in potassium. I understand that muriate of potash is not suited for "organic" gardening due to it's chloride content.
People have suggested things like greensand (too expensive), worm castings (too time consuming/ expensive), and wood ash (too variable plus my pH is right where it needs to be).

I've seen sulfate of potash listed in some organic gardening sources, but not often. I'm curious, would sulfate of potash be a suitable way to raise my potassium without trashing my organic approach?

If it's fine to use, how often to apply? When to apply relative to planting time?

February 7, 2017	#1
ARgardener Tomatovillian™ Join Date: Dec 2016 Location: steamy southern Arkansas Posts: 155	Sulfate of Potassium- okay for organic gardening? Alright, so my soil is quite low in potassium. I understand that muriate of potash is not suited for "organic" gardening due to it's chloride content. People have suggested things like greensand (too expensive), worm castings (too time consuming/ expensive), and wood ash (too variable plus my pH is right where it needs to be). I've seen sulfate of potash listed in some organic gardening sources, but not often. I'm curious, would sulfate of potash be a suitable way to raise my potassium without trashing my organic approach? If it's fine to use, how often to apply? When to apply relative to planting time?