Do pine needles affect tomatoes

Pine needles can affect tomatoes primarily through their impact on soil acidity. Pine needles are acidic, and while they can be used as mulch, excessive amounts may lower the pH of the soil, potentially harming tomato plants that prefer slightly acidic to neutral conditions. Additionally, if pine needles are used as mulch, they can help retain moisture and suppress weeds, which can be beneficial for tomatoes. It’s important to monitor soil pH if using pine needles in the garden.