Neem Oil is good to kill aphids IF it is fresh. Neem has a short shelf life after it has been opened. Mix 2 oz per gallon of water and use as a spray and/or a soil drench. Go ahead and try it but be very observant of the aphids to see if they die or not. Aphids are fairly easy to kill and just plain dish soap mixed at 2 tablespoons per quart of water usually gets rid of them. But get rid of them now.I haven't got any castile soap base to hand, I've got neem oil though?
Could I add that to water and spray?
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