Lifespan of fertilizer and other solutions

[rangiku]

How long are the dilutions of fertilizer, KLN, Physan 20, Phyton 27, Bayer 3-in-1 good for? Must they be made up each time I use them?

Thanks for you help.

[Ray]

In general, it is always best to start with fresh material for all chemicals.

Fertilizers made from minerals are usually quite stable. Some of the elements may precipitate over time, so it pays to shake or stir it before each use. fertilizers with "natural" ingredients (kelp, fish emulsion, etc.) can spoil.

K-L-N, SuperThrive, and all hormone-containing additives must be made up fresh, as the hormones degrade rapidly upon exposure to light and heat. You even need to take precautions with the retail bottle or product, protecting it from heat and light. Kept refrigerated, a fresh bottle of K-L-N is good for about a year. In the dark at room temperature, maybe 6 months.. Buy old stock and it may be "dead" when you purchase it.

Most pesticides will tell you to not store unused, already-mixed material, and that is primarily for safety concerns, as folks don't usually label their application or storage containers.

Physan is an organic salt solution. It is quite stable, but still should be used within about a week of mixing.

Phyton 27 is just a copper sulfate solution, so is quite stable.

I cannot address the Bayer product, but being quite toxic, I would think it best to not store it after mixing for use. Mix only what you need for the specific application.

[rangiku]

Thank you, Ray, for all the information. I greatly appreciate it.

[boyong]

Great information ray thanks

[RJSquirrel]

I do notice if my mix's sit for a week and I don't use it all, it tends to start to smell funny...Haven't figured out what it is yet thats exactly smelly..but I do think it is the Superthrive IMO...It smells odd anyway. Hadn't thought about the Superthrive being worthless after a week being mixed up. I was thinking it was the Pelletized Lime that was smelling like "oysters or fish" but the calcium is clean smelling even after months of the lime pellets dissolving. Its Not the pinch of magnesium in it making it smell odd eithe it has no odor like the calcium.

So "Fresh made is Best used when Fresh made"