How can I make an organic pesticide?

You can make a pesticide out of onions, peppers, and garlic. :)

Start by cutting the onions, garlic, and preferably Jalapeno peppers into a pot that is big enough to fill a gallon. Use a masher or a blender to create these vegetables into a paste and let it sit for a while. Wash your hands, because it will burn if you rub your mouth or eyes. :O

After they have been sitting for a few minutes, pour the paste into the pot of water and fill it up with warm water. Now you have to be patient and let it sit for about 25-30 minutes. After that, use a funnel or something to catch the chunks of vegetables as the liquid is poured into the gallon jug. A quart spray bottle works too. :)

Before you close off the bottle, dump some dish soap into the jug, about 1/4 of it. After you’re done, seal the bottle because it’s going to smell like crap, trust me. It’s better if you use eco-friendly dish-washing soap.

Now you’re ready to spray or pour your garden with this stuff. The horrible smell of the pesticide will repel the bugs off so your garden should be pretty safe. Since you mad eit with vegetables, your pesticide won’t harm you when you eat the vegetables in your garden because it will evaporate into the atmosphere so it’s safe. :D

Hope I helped. :D