Expired fertilizer

De la fermentation si c'est organique et conservé à température ambiante. Le Ph baisse fortement. Il y a beaucoup d' engrais maison que l'on fait "reposer" avant de servir. Il faut tester. 🎲

Hello. My opinion is; The expiry date was adapted from the food industry so you will buy more food and not use the bag of spaghetti noodles you have had laying around for 3 years that are perfectly good. Unless it has something organic in it, it won't go bad. If it hasn't reacted so far it's not going to blow up after the date is past. If it has evaporated any, then it's stronger and you should us a little less than a dose. You got a new one being shipped to you free of charge, Well, GOOD FOR YOU. That will teach them for putting a expiry date on the inert package. I would use the old fertilizer first (I'm sure it's still good) and then use your free one. Chuck.

Depends on the fertilizer. Powder form I would not be concerned about. Liquid I could see some issues. But not right at expiration date. Exo dates can be a gimmick to get you to buy more. Or if they are legit then the date listed is usually based on the worst possible storage conditions.

If not difficult - exchange. Chemical reactions have expiration dates. The closer to the expiration date - the less the effect of fertilizer (as an example)