Mixing Your Own Balanced Organic Fertilizers
Posted March 27, 2017
While we want to provide our plants with nitrogen, phosphorus, and potassium in slow-release form, a balanced fertilizer should supply smaller amounts of calcium, magnesium, sulfur, and micro nutrients to maintain good tilth. A mix of amendments is the best way to meet these requirements and to maintain long-term fertility.
Here are some easy recipes for creating your own.
Slow-Release Fertilizer Mix:
3 pounds fish meal
6 pounds calphos
1 pound kelp meal or 6 pounds greensand
This is a general-purpose formula that works nicely on all types of plants. These three amendments take longer to release nutrients, apply this formula in the fall to supply nutrients for the following spring. Additional phosphorus and potassium will become available in the following years as a result of microbial activity. Apply 3 to 5 pounds per 100 square foot.
Moderately Fast-Acting Fertilizer Mix:
2 pounds blood Meal
6 pounds bonemeal
6 pounds greensand
This combination is a general formula that is high in phosphorus, which is particularly good for flowers and vegetables such as root crops, melons and squash. It doesn't supply organic matter, so use with compost. The ingredients break down relatively quickly, so apply at the beginning of the growing season. Use 3 to 4 pounds per 100 square foot.
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