Thread: phal problem
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Old 03-23-2013, 05:16 PM
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I can't tell from the photo, so here are some suggestions:

The spots could be bacterial if:
They are growing in size, or
There is sort of a halo or ring surrounding the spot, or
Tissue in the spot appears soft or even watery, or
There is an odor to them (rare in my experience).
Of course, any or all of the above may apply.

The spots could be entirely environmental (heat, cold, sunburn, etc.) if:
The spots are not growing in size,
They appear to be drying out rather than rotting,
The spots are firm, raised (could be edema).

Of course, environmental damage can be followed by bacterial damage.

I would keep an eye on it. if the spots are showing bacterial symptoms, consider cutting off the half of the leaf with the spots, using a flame-sterilized sharp knife.
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