Coffee grounds are a popular organic amendment for gardens and landscapes. They are known to improve drainage, aeration, and porosity in soils while also providing nutrients like nitrogen, phosphorus, potassium, and magnesium. However, one question that is often asked is whether coffee grounds are good fertilizer for pine trees. The answer to this question is yes – coffee grounds can be used as an effective fertilizer for pine trees.
Pine trees are generally tolerant of acidic soils with a pH range of 5.0-6.5. This means that coffee grounds – which have a pH of around 5.5 – will not harm pine trees when used as a fertilizer. In fact, the slightly acidic nature of coffee grounds can actually be beneficial for pine trees since it will help to lower the soil pH over time (pine trees prefer slightly acidic soils). Additionally, the nutrients in coffee grounds will help to promote healthy growth in pine trees.