Heat Stress

[RJSquirrel]

I think my plants after 30 some odd days at over 100 have become heat stressed. I was hoping to get thru this with all them outside that need to be outside, but I'm finding too many small things that are causing problems. And...
Heat related stress seems to be the common thread in all of them. Specifically, I didn't have any soft brown rot until I moved some of these outside. Leaves all nice and shiny are now dull lifeless and leathery. Odd rot here and there is taking a small new shoot, bulb or leaf a day it seems. got to stop this right now. Trimmed them all up. The ones who suffered some kind of damages where brought inside cleaned up and root checked. The Roots are fine but the plants just arent taking water fast enough. They cant until it gets cooler outside. I feel better bringing them inside and stuffing the windows again ..Not going to let them burn like I did last year so I have learned somewhat...I might have learned a little late but I have lots of good stuff taken in so in 4 or 5 weeks back outside..maybeeeee

heres the AOS link for Heat Stress

[Wjs2nd]

Sounds like you need a shade house with some cooling mister in it. Good luck RJ. I hope everything pulls through.

[RJSquirrel]

yes hence lies the problem of living in an apt. they did okey in dank room in the back all year long. was trying to get them outside so as to maybe get some blooms this autumn/winter out of the catts. not worried about blooms anymore just keeping the plants up for next time. im getting tooo old for too many more NEXT times. just about every bud has blasted and most of the sheaths were harboring deadies.

[Orchidreamer]

Ah, heat stress. This July has been pretty tough, with the temps hovering near the 100s. My cym and vandas made it through OK, but my catts started showing signs of leathery leaves and yellowish brown patches. I am so glad that now the temps dip into the 60s at night, so I moved out some of the cool growers.

I hope your plants are OK! Hopefully the winter coolness will de-stress them!

[vandagirl]

Oh boy. I'm glad that we don't have that problem here. Only to little warmth. Hope everyones plants will be ok.

[Ray]

I recall reading (somewhere....) that orchids' physiological processes start to shut down at elevated temperatures - 85°F+, supposedly - although I'd think it would vary with the species.

[pedidiva]

It's been a tough summer. Thanks for the AOSA link.