I'm with Rob on this one. The white appearance is common with sunburn. With the sun changing angles through the year, and me pruning the shading bushes sporadically, I had a couple of plants sunburned this past summer. Didn't think conditions were all that different, but direct sun on a phal or some dendrobiums can quickly cause sunburn. After it happened I watched periodically through the day, and sure enough, the sun peaked through the bushes for over an hour and hit the affected plants. A little earlier or a little later and it was fine.
As far as trimming goes, if it bothers me, I cut it. If I can live with it, I leave it.
Last edited by BobInBonita; 02-01-2011 at 05:47 PM..
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