On Tue, 02 Aug 2005 00:12:37 GMT, boothbay
wrote:

On my flowerless Phal I have 2 large healthy leaves and another one
appeared recently. Since we are having heat wave here in the east, I put
them out on my patio where it gets all the humidity that this heat wave
brings and maybe 15 minutes of morning sun, the rest is in shaded part
of patio. This morning i noticed on one of the larger leaves a blotch
and another on the other leaf. What gives?

If it looks scorched - it is probably sunburn. The intensity of
the sun and the difference from the deep shade in the house
probably did a number on it. Just put it back where the sun will
not strike the leaves at any time. If it continues, you will
probably loose the leaf.

Phals sunburn just as a person does if they go from winter long
sleeves to sun bathing with out a schedule to 'get used to it'
gently.
SuE
http://orchids.legolas.org/gallery/albums.php