What I found very helpful this year was to examine all my brassica plants when
aphids first started showing up, and squishing them then. It seemed to curb
population expansion, since the nymphs mature in 1-2 weeks. Prevention is
really the key with any pest/disease, starting with healthy soil.
Excellent advice. Using less-toxic products as a last resort is always the
best way. If using neem oil, be sure to apply in the evening since it is highly
toxic to bees. Keep in mind that pyrethrum (synthetic or natural) is toxic to
aquatic life. I know both are used in organic practices but
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