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Homemade Rhubarb-Aphid-SprayYou can brew this rhubarb-aphid-spray yourself at home with very few ingredients. Juices from the leaves of your plants are sucked out by aphids and they must be controlled early on. Save 5 or 6 rhubarb leaves from the compost heap. Remember the oxalic acid? Put on your gloves! Chop them up finely and add to 1 quart of water. Let this boil down for approximately 30 minutes. Add a squirt of non detergent soap to this liquid. You can use regular dishwashing soap. Strain the liquid of leaves. Putting it though a sieve would be a good idea. Once you have strained your mixture, simply add it to a spray bottle. Rhubarb leaves are poisonous, so do not use this spray on or near your edible vegetable plants in your garden.
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