How To Raise pH In Soil Fast: what to add – GrowerExperts
Hydrated lime. Hydrated pulverized limestone is the fastest-acting alkaline soil amendment, but it is extremely easy to overdose. It can burn plant roots easily and should be avoided by all but the most seasoned gardeners. As with all lime products, hydrated lime will work much better if it can be worked down into the soil, rather than left on top.