As the recipe in the above link is using rubbing alcohol, it seems proper to highlight that not all rubbing alcohols are the same.
Over here most seem to use ethanol, instead of the the isopropyl based that is assumed in the above recipe. One needs to check this carefully!
Using ethanol at full strength on plants probably isn't a great idea, although I have seen some sprays mentioned for plant use that have 20-30% ethanol in them, so this can still be worth exploring. Unfortunately I'm not able to post a link to the Pdf involved, but this was part of a trial to see if ethanol can be as beneficial to plants as methanol. Methanol sprays is supposed to increase yields on some plants, but of course methanol is toxic to humans so ethanol would be safer to use.
You can even water your plants with alcohol and provided you don't use to much it will be okay. It is supposed to give shorter stems on some forcing bulbs.
This is not really a link I ever anticipated posting,
but if you like to know more about the effect of alcohol on plants, you can read some here:
https://sciencing.com/effect-a...
