Aspirin Strength

bernadette added on March 25, 2018 | Answered

An article mentions aspirin for plants immune system. 3 aspirin per 4 gallons. This is the 300mg aspirin, not the baby aspirin of 75mg?

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Certified GKH Gardening Expert
Answered on March 25, 2018

I have used 75's and 300's with similar results. If anything, the 300 mg uncoated tablets help more with rooting. This is my preferred use for them. In soil I used it for overall health of plants, but in hydroponics, I use it for vigorous root stimulation.

I found that using a single tab for 2 gallons was sufficient with half a tab being the threshold for noticeable effect. Just make sure that they are uncoated tablets, as the coated kind don't work near as well.

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Answered on March 26, 2018

Thankyou Bush Doctor, for your prompt and excellent reply. I will follow your advice.

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