Thank you for reaching out to ask2.extension.

Yes, pine needles can be used as mulch in vegetable gardens, and they have many benefits:

Weed suppression: A 2–3 inch layer of pine needles can prevent weeds from germinating during the growing season

Water retention: Pine needles allow water to pass through easily, which can help save on water

Soil enrichment: Pine needles break down slowly, adding nutrients back into the soil

Erosion reduction: Pine needles can help reduce erosion

Moisture evaporation reduction: Pine needles can slow down moisture evaporation

It is an old wives tale that pine needles increase acidity in the soil.