| Dear Cecilia,
Generally it is a myth that Cymbidiums can't tolerate hot weather. They can. Here in Melbourne Australia, Cymbidiums are probably the #1 orchid. We grow them outside all year. Our summers can get fierce hot, typically around 30-35C (85-95F) and as high as 40C+ (105F). They do need protection form the sun here. Mine never get direct sunlight. They also need to be watered quite a bit during out hot dry summers, as much as 2-3 times per week in summer. Many of us put plastic plates/saucers under them to help. That's probably not necessary for places that have cooler or very humid summers.
Now, they do need a cool spell in the autumn in order to bloom, so that may be the source of the misconception that they can't tolerate heat.
-Kevin |