Aphids come in all colors, including green, yellow, red, and black, doing damage primarily to young, tender foliage and buds. They're defenseless and can easily be squished, brushed, or sprayed off. Insecticidal soap sprays and oils may be used as well, but they will harm your aphid predators, too. Control for ants in the area, since colonies often spread aphids, protecting them and feeding off of the sticky sweet substance they produce.
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