Lowering ph of flower beds

Lowes


Miracle Grow for acid loving plants

I'd assume you'd need to get it much more lower than 6 for acid loving plants correct? Don't trust me on that, wait for other responses, that's just my thinking

The best long-term solution is elemental sulfur - but it takes several months. Very slow, biological process where sulfur oxidizing bacterial convert sulfur to sulfate producing sulfuric acid in the process. Without a soil test to provide you the specific application rate you need to guesstimate using a table in this publication for the particular characteristic of the soil in your planting bed. LINK. One of the posters recently said he bought a 50 lb bag of LESCO elemental sulfur at Tractor Supply for slightly over $20. I paid $36 for the same product at Site One.

Certainly iron sulfate and aluminum sulfate (alum) will lower the pH more quickly, but they are not “permanent” solutions.

Be careful, err on the side of applying too little than too much. Easy to add more if needed later. Can’t remove what you add, if you apply too much, then you may need to come back and lime to neutralize excess acidity.