why does neem go bad after 24 hours?

[budherder]

i cant understand how an oil will just go bad from sitting in water over 24 hours. how does this make the oil less effective on spider mites?

 

[budherder]

im asking this because the bottle says best used within 24 hours of mixing.... i guess it makes sense for soaps but i dont get it with oils.

 

[vilify]

i still use it for weeks after mixing, still with some success

 

[Fungus Gnat]

Water is a solvent, since alot of the neem compounds are similar to hormones maybe it degrades them?

 

[sandiegojack2]

emulsification's water mixed oil's will seperate and not stay in suspension....not sure if it really goes bad as much as seperates. Mixed neem oil's ready to spray do not say this! I have two in front of me ........it may not coat the leaves as good I really don't see why! Some neem is cold squezed other's manufactured differently so I'd ask the manufacturer call the number on the label (not the emergency one) and see if they will tell you! Good luck my brother! jack

 

[DanielTokes]

emulsification's water mixed oil's will seperate and not stay in suspension....not sure if it really goes bad as much as seperates. Mixed neem oil's ready to spray do not say this! I have two in front of me ........it may not coat the leaves as good I really don't see why! Some neem is cold squezed other's manufactured differently so I'd ask the manufacturer call the number on the label (not the emergency one) and see if they will tell you! Good luck my brother! jack

hey i had a neem oil mixture that wasnt used for a long time. and when i sprayed it my plants stressed and the leaves curled bad in some spots. so do you think the time it just sat there effected the mixture?

 

[espoker19]

I try to just make enough so I'll use most of it. It starts to breakdown into various compounds and will begin to tear apart your plants tissues. You can also try mixing in about 1 TSP of plain, unscented dawn dish soap. It helps the neem oil molecules emulsify better with the water. When I am on a neem regimen, I'l rotate one day neem/one day fresh water to remove residue. You don' want that shit building up over leaf stomata. Will fuck your shit up and make it hard for plant to respire.

 

[thegreensurfer]

I try to just make enough so I'll use most of it. It starts to breakdown into various compounds and will begin to tear apart your plants tissues. You can also try mixing in about 1 TSP of plain, unscented dawn dish soap. It helps the neem oil molecules emulsify better with the water. When I am on a neem regimen, I'l rotate one day neem/one day fresh water to remove residue. You don' want that shit building up over leaf stomata. Will fuck your shit up and make it hard for plant to respire.

1 tsp of dish soap is way too much, more like 1 drop

 

[kuderboi]

NEEM OIL GOES BAD. I had some sitting in my sprayer for about a week and a half. Without thinking about it I sprayed and too my surprise it pretty much molded my leafs and and new growth shoots. Im thinking maybe a little antifungal soap?