Disadvantages of Using Blood Meal Excessive nitrogen is sometimes the culprit when plants are not producing as many flowers as you would like. Excessive amounts of nitrogen can even burn plants or, worse yet, kill them. To avoid such problems, follow the application instructions on the package of blood meal.

And although bone meal and blood meal sound similar and are both organic fertilizers, they differ in the nutrients they contribute to help plants grow. Blood meal is high in nitrogen while bone meal provides varying amounts of phosphorus and calcium.

Why use bone meal for plants? Bone meal is a great fertiliser for a few key reasons: The first is that it's a great source of Phosphorus which is used by new plants to produce strong roots and so is great for root vegetables such as onions, garlic, carrot and parsnip.

There are many reasons to use blood meal for plants and soil health. It's an organic source of nutrients that improves soil, promotes plant growth and flowering, reduces waste, deters unwanted pests, and aids in composting. Blood meal is good for virtually all plants, and it lasts long in soil.