With regular doses of aspirin - every two months - indoor and outdoor plants will grow more, bloom better, and have fewer fungus and pest problems. Aspirin prevents plants from producing a substance that hastens aging or wilting.
I am doing a science fair project on this topic. I am in middle school. Here are some answers to your questions.
Yes, it can be used on almost ALL plants as long as you follow the instructions. You must discard some of the solution because on the bottom is where most of the aspirin is (even when you're done stirring.) So the top is mostly all water anyway. You give each plant the solution as you would any regular fertilized water (just when needed) only give the plant water so it is wet. Don't let it drown in water, but don't be afraid to give it the water either. The aspirin won't burn the plant, if you follow the instructions carefully.
So far my plant with aspirin in it has a richer color it is growing MUCH MUCH faster and it is very full.
At Christmas time, my dad used aspirin water for the tree, i couldn't believe the difference this made.
comment if you have any more questions.
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You can put aspirin in a watering jug and mix in, I use two. Water your plants as usual and you will save them from disease.