I wouldn't throw away a girl because she gets PM. Is it really so dire? I've seen a lot of people post how the Sweet Pink Grapefruit is susceptible and I know some people cull it. I also know theres a bunch of folks who cherish her.
I think you can grow a plant to help itself. What Tehherb says about temp fluctuations seems a likely culprit. At least that's what I've experienced too. What temps were you guys reading when your girls went down? Were any of you using preventative sprays at the time or was that how you learned?
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