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Title: Old Fertilizer Post by: Kathleen on March 27, 2017, 09:19:25 AM Last spring I bought a large tube of HVH Fertilizer and I have only have about 12 small plants left, I still have about half the tub of fertilizer left. Is it still good to use? Does it lose strength over time?
Kathleen Title: Re: Old Fertilizer Post by: Kyle on March 29, 2017, 06:50:16 PM It should be ok. I have used Special Blend fertilizer that was 3 and 4 years old and it seemed to work just fine.
The fertilizer absorbs moisture and seems to fade the dye that is all. However, I had Acid Blend fertilizer that was 3-4 years old and it completely turned to a liquid paste with standing water at the bottom of the container. I tried drying it in a forced air oven at very low temps across a metal sheet but it didn't work. I tossed it out because 1/2 tsp had become a concentrated liquid that I did not want to use. Kyle |