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Plumeria leaves turning yellow/brown; Some leaves curl

8 years ago
last modified: 8 years ago

I live in San Diego, CA where my Plumeria trees have been doing great all season long, producing blooms in abundance. Over the past two weeks, the leaves have started to turn pale yellow to brown, with some curling. I know over-watering is not the problem here in San Diego (we're in a sever drought with stringent watering restrictions that I do follow). I've only fertilized them twice this year with an organic 4-4-4 mixture. I added kelp meal once at the beginning of the year. Is it a disease or pest? Does it need insecticide\fungicide soap spray or something like neem oil? Any feedback is appreciated.

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