phalaenopsis: wilting flowers and brown spots

[hrothgar]

So, I've been trying to get my Phal to re-flower again for the last two years, finally got results in January and saw my first bloom in mid February. Everything was going great until today when I spotted a wilting flower. The last bloom on the spike opened yesterday, and while I understand good things come to an end, it just seems too soon. Also, there are some brown/black spots forming on the inside of four out of six of the flowers. A photo is attached, the wilter is on the right, and the spots in question are visible.

I water once every 7 to 10 days by dunking and lightly mist the roots once or twice a day with a spray bottle. I should also mention things have been very warm but we started a cold snap two days ago, which has effected the temperature in the room.

So my questions: Does anyone know whats going on? And what can I do to fix it?

[Lana]

Since you've had this plant for at least two years, I'm assuming you've re-potted it before and know what the health of its roots is. If the roots are ok, then I'd say the temperature change might have affected the blooms. Do you also run the heater during the cold snap? 'Cause those dry air, and dry air shortens the life of blooms, too.