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08-19-2007, 05:47 PM
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Join Date: Aug 2007
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Location: Vancouver Island
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Aspirin Spray
I'm interested in trying an aspirin foliar spray which is supposed to be very beneficial for orchids. Has anyone made use of this and, if so, what dilution did you use and what are your conclusions? Is it really worth the bother?
Shirley  |
08-19-2007, 08:27 PM
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Join Date: May 2007
Location: Waterloo, Iowa
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Shirley, I did a google search and came up with this.
Aspirin For Your Plants? Try it!
very interesting!!
Julie |
08-19-2007, 11:09 PM
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Aspirin Spray
 Thank you, Julie
Some very interesting reading! Seems like it might be a good idea.
Shirley |
08-19-2007, 11:31 PM
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Join Date: Aug 2007
Location: Colorado Springs
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Interesting! Thanks Julie and thanks Shirley for bringing this up. I actually use aspirin on roses
and the flower stays fresher for few days. Wonder if it works on orchid plants.
Last edited by starwhiz; 08-19-2007 at 11:37 PM..
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08-20-2007, 02:58 PM
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Quote:
Originally Posted by starwhiz
Interesting! Thanks Julie and thanks Shirley for bringing this up. I actually use aspirin on roses
and the flower stays fresher for few days. Wonder if it works on orchid plants.
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It's suppose to work on orchids from what it says in the article. I sure wish that I had known about this in the spring. Didn't know we were going to have a monsoon season this year. I just sprayed every thing with Physan and I will probable do it again the end of this week. Boy we are just getting an unbelievable amount of rain this week.  Get out the rowboat!!
Julie |
08-20-2007, 06:18 PM
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In that study, they used a 15 millimole concentration. That sounded slim to me when I initially thought about it, but my numbers flip in the opposite way:
A mole of acetylsalicylic acid is 180.16g, a mole of water is 18.01 grams. Therefore, you need to dissolve 15/1000 x 180.16 = 2.7 grams of acetylsalicylic acid in 18.01 grams of water to make that concentration.
As a typical aspiring is 500 mg (1/2 gram), and a quart of water is roughly 950 g, you would need to dissolve 285 aspirin in a quart of water to achieve that concentration.
I ain't puttin' that on MY plants!
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08-20-2007, 08:40 PM
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Just think about it though, Ray. 
Your orchids will be headache-free 
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08-20-2007, 10:02 PM
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Ray, I think there must be an error in your calculations though I haven't figured it out. The dilution I was told is 1/2 a 325g aspirin (that's the typical size in Canada) to 1 gal. of water, plus 1 tbsp. liquid soap! Seems much more reasonable.
Shirley
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08-20-2007, 10:04 PM
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Senior Member
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Join Date: Aug 2007
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Sorry, Ray, our aspirins are 325mg, not 325g!
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08-21-2007, 12:16 AM
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Ill keep an eye on this thread. Interesting! Has anyone
tried aspirin or would like to try, and report the result in the forum?
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