Blood meal fertilizer, often used for daffodils, tulips, and other flowering bulbs, is inexpensive and easy to use, but it isn’t without its share of problems. Read on to learn about the pros and cons of fertilizing bulbs with blood meal.
What is Blood Meal Fertilizer?
Blood meal fertilizer is a nutrient-rich byproduct of animals processed at slaughterhouses or meat processing plants. The dry powder can be made from the blood of any animal, but it most often comes from pigs or cattle.
Blood meal is available in nearly any garden store or nursery. The product is often used by gardeners who prefer to avoid harsh chemicals that can run off into water where it can pollute the environment and harm fish and wildlife.
Using Blood Meal in Bulb Gardens
Fertilizing bulbs with blood meal is easy; most gardeners simply place a small handful of the powdery substance under each bulb where it is readily available to the roots.
You can also use a garden fork or spade to scratch or dig blood meal into the soil, or mix it with water and pour it on the soil around tulips, daffodils, and other flowering bulbs.
Once applied, blood meal raises the amount of nitrogen in the soil very quickly, and the effects generally last six to eight weeks. Blood meal fertilizer also contains small amounts of other substances that are beneficial to plants, including potassium and phosphorus.
Problems with Bulbs and Blood Meal
While blood meal fertilizer can give flowering bulbs a real boost, it can also cause a certain number of problems. It is important to use it lightly, and you may prefer not to use it at all.
Here are a few things to consider when using blood meal in bulb gardens:
Apply blood meal lightly and never exceed label recommendations. Although it is a natural product, too much can burn delicate roots.
The odor of blood meal may attract unwanted visitors to your garden, including raccoons, possums, or neighborhood dogs. If this is a concern, you may want to use a commercial fertilizer. (On the other hand, the aroma of blood meal scattered lightly over the soil may discourage rabbits, moles, squirrels and deer).
Blood meal is mildly to moderately toxic to dogs and cats. If ingested, a small amount may cause a mild tummy ache. In larger amounts, it can cause lethargy, abdominal pain, nausea, vomiting, diarrhea, bloat or drooling. In some cases, it may cause pancreatitis.
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