Fish Emulsion and Yellowing Plants: How to Avoid Over-Fertilizing with Natural Fertilizers (2023 Update)

Yes, it's possible that you are using too much fish emulsion on your plants, which can cause the foliage to turn yellow. Fish emulsion is a natural fertilizer that is high in nitrogen, and too much nitrogen can cause leaf burn and discoloration.

To avoid over-fertilizing with fish emulsion, follow the instructions on the package carefully and dilute the emulsion with water as recommended. In general, it's best to use fish emulsion sparingly and to apply it no more than once every two weeks.

If your plants are already showing signs of yellowing from over-fertilization, you can try watering them thoroughly to help flush out the excess nitrogen. You can also dilute the fish emulsion even further or use a different type of fertilizer that is lower in nitrogen.

It's important to note that yellowing foliage can also be caused by other factors, such as lack of sunlight, pest infestations, or disease. If your plants continue to show signs of yellowing even after adjusting your fertilization practices, it's a good idea to consult with a professional gardener or horticulturist for further advice.