Risk of damage from short-term exposure to extreme heat.

[BrassavolaStars]

Hello All,

I am worried I may have made the dog in the hot car mistake with my plants.

I had just begun to add my plants to my greenhouse. The greenhouse has three roof vents, a powerful fan, and an aluminet shade cloth.

The plants in the greenhouse were cattleyas, brassavolas/rhyncholaelias, a few dendrobium nobiles, one Den Formosum, a vanda, and a few zygos and oncidium type orchids.

Today, the predicted temperature for the morning was 79f and cloudy, however, when I checked my thermometer in the greenhouse, it registered 99f with a previous high of 107!

I immediately took my plants out and put them somewhere cooler.

So far, they appear to be alright. What are the chances they have actually been harmed by these high temperatures?

it could have been above 100f for anywhere between 1hr and 3hrs. Would this amount of time at those temps have been enough to have caused problems in the plants listed above or should they be okay?

Thanks.