scot29
Cool Member
Posts: 73
Joined: Sun Mar 28, 2010 1:03 pm
Location: zone 4

neem oil shelf life

Hi all. I'm going to try neem oil for the first time this year. I read the sticky, which has lots of good info. I'm thinking of ordering a 32 oz bottle of dyna-gro, but I was wondering if it has an expiration date, or if it would weaken over time. Tks.

The Helpful Gardener
Mod
Posts: 7491
Joined: Mon Feb 09, 2004 9:17 pm
Location: Colchester, CT

I'm second year on my current bottle and it's just fine; these are natural oils and not as volatile (read unstable) as chemical ferts... I've gone three years on a bottle with fine results...

HG

cynthia_h
Super Green Thumb
Posts: 7500
Joined: Tue May 06, 2008 7:02 pm
Location: El Cerrito, CA

I have no memory of WHEN I purchased my Rose Defense. I know that it was after we moved to this house (which was in July 1997). So that's an early bound. I know that it was before April 2007, when I had knee-replacement surgery. So that's a late bound.

And it still works very well. As of this month, then, the Rose Defense (neem oil/azadirachtin active ingredient) is somewhere between 3.25 and 13 years old.

It lives outdoors, on a 4-foot-high "potting table," in a carport.

Cynthia H.
Sunset Zone 17, USDA Zone 9

Vergil is sleeping very soundly, and has been for the past 2 or so hours, since we came home from being outdoors all day. We left the house at 0645--very early for him at any time, esp. post-op--and his extended sleep has allowed me my first extended visit to the forum since before his surgery on May 26. :D

The Helpful Gardener
Mod
Posts: 7491
Joined: Mon Feb 09, 2004 9:17 pm
Location: Colchester, CT

There it is...

Good to hear about Vergil... :D

Good to have you back... :D

HG



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