Toss the peppers, onion, garlic and water into a blender or food processor and let it rip until a mash is formed.
Cover and Sit
Place the mash into your large container and cover it with up to 16 cups of hot water. Allow this to sit for 24 hours so that the mash steeps the water. Strain the mix and place the liquid into a spray bottle. Hang onto the mash.
Using the spray bottle, generously spray the leaves and base of your roses, vegetables and other valued plants. The vegetables used deter most insects, including grasshoppers and aphids to name a couple.
Remember the mash? Observe your garden and determine where in the flower beds the insects seem to be most populous. Dig into the soil there and plant the mash. The ingredients will keep insects away and help you maintain a beautiful garden.