Pine Shavings – Don’t Make Soil Acid

Q: I have access to pine shavings with no manure. I want to use it in my rose garden for weed control but I am worried it will change the soil pH.

A: Contrary to popular belief, pine chips, pine straw and pine shavings have little effect on the pH (acidity and alkalinity) of soil. Garden soil has a great capacity to resist immediate pH change so a mulch of pine shavings would have little effect.