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?

Hi, I'm in the NE too, and I learned the hard way that it's a bad idea
to put out phals for the summer--catts and dendrobiums are great
outdoors for the summer, but not phals. The problems are (1) sunburn,
and (2) crownrot. When it rains (a doozy last night) or when there is a
heavy dew, phals are very likely to get crown rot--lots of moisture in
the crown, no moving air, high humidity, etc. Unless your patio is
covered, you will probably have big problems with crown rot. One summer
when I moved my phals outdoors, and I lost about 40 plant in fairly
short order. I decided then that it was a bad idea to summer them
outdoors. BTW, it didn't seem to matter whether they were in S/H, moss,
or bark--phals just didn't like being outdoors and being exposed to the
elements.