Hi!

I live in india, Chennai.here the summer temperature is between 40*to 45*c.my oncidium was fine before summer set in.but now im seeing most of the leaves turned yellow.apart from the new pseudo bulb.i keep my sharrybaby in bright light condition.im also seeing the same condition happening to my oncidium twinkle red.but my phalenopsis, dendobrium,vandas are fine.is it because of the temperature? some one please help.

Thanking you

Sheetal