sour milk on garden or plants

Question

Would it be ok to pour a gallon of sour milk on garden or plants? Does it have any nutritional value at all?

Answer 1

Yes, it’s fine to pour sour milk on garden soil or to spray it on plants. Milk will add a small amount of nitrogen and calcium to soil. Milk sprayed on leaves is a good way to prevent powdery mildew fungal growth- I’m not sure whether sour milk would have the same benefit but it’s worth a try.