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Home > Question >

Can I use pine needles to acidify my soil?


Our Advice:

Mixing pine needles into the soil without composting them may temporarily lower the pH locally. Leaving them on the soil surface as a mulch has little effect. Even though the needles have a pH of about 3.5 when they fall, they have a nearly neutral pH after composting. The low pH makes them slower to rot down than other leaves.

Gardening Expert:
Steve Bradley

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