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Hugelkultur: Where Environmental Art Meets Permaculture
- positr0n 2y agoWhile the rest of the allopathic information seems right to me, this is a common gardening myth: > Pine Needles: Their acidity can alter soil PH. The soil near pine trees is usually acidic, but the causality is reversed. Pine trees grow well in acidic soil, so that's where they are. Pine needles themselves are somewhat acidic. As are things like coffee grounds. So it is commonly repeated advice to mulch acid-loving plants like blueberries and azaleas with those materials. However their acid is neutralized during the process of breaking down and they do not actually acidify the soil.