Here's a recipe from Rodale: One bulb garlic (a BULB, not a clove) One medium onion One teaspoon hot pepper powder Blend with one quart water Let steep one day Strain (cheesecloth is best) Add one tablespoon dish soap (NOT with Triclosan - found in anti-bacterial soaps. AVOID this stuff - it kills plants. I know from experience... I believe it's because it's a 2-4-D derivative...) Put in squirt bottle and spray Repeat once/week, as needed Re-apply if it rains As with any product, try this on a few leaves first; wait a day to see if it affects your leaves; then use as above. In the interim, spray the aphids with a sharp blast of water. That will slow them down - knocking many of them off - enough until you can treat with the spray. Robert.