Manure supplies plants instantly with nitrogen, phosphorus, potassium and other nutrients by warming the soil, which speeds up decomposition, and lowers the soil's acidity level, or pH, less than chemical fertilizers.

How do you acidify soil quickly?

Two of the fastest acidifying methods when it comes to soil are white vinegar and coffee grounds. The vinegar should be diluted with filtered water, whereas the coffee grounds should be fresh and tested for an acidic pH before use for the best results.

Will cow manure acidify soil?

Cow manure has an acidifying effect on soils. When aged cow manure is incorporated into clay soils, it can increase the already acidic soil to levels that will not support healthy plant development. Adding manure to alkaline soils can increase the soil's acidity over time and help plant development.