Another angle

I'd like to see the plant. It is a dendrobium, perhaps from Australia. Show me the plant please...

Plant

Plant

Plant

it is a dendrobium hybrid. There is more but no way to know. The mathematical equation is too big. Looks like a good plant. After the bloom get help and repot it. Eventually that potting mix may kill your plant. Enjoy the bloom first...

Thank you. I will repot & buy an orchid mix after the blooms die.

Oops! I forgot to mention that inside the cellophane wrapping was this label:

I looked it up and of course, it was mislabeled. Also, there was not another orchid like mine for sale. Yet there were some of the one named in the tag.

Very nice, typical a section spatulata Dendrobium (antilope orchids) cross, most of those like half shade and a warm spot

To be safe no lower than 50 in winter...

McLellan Botanicals in California was the sender on huge shipping boxes to Trader Joe's in Texas.

"It is a warm growing 'Intermediate' type Dendrobium. Intermediate in flower shape between Dendrobium Phalaenopsis and the Antelope Types.

I gather you are in Texas which seems to have extremes of climate.

Easy, In Tropical SE Asia, Tropical Australia, Hawaii, Parts of Florida and perhaps in nice centrally heated homes.

I've put some complete culture notes for Canada in the link

Culture notes for Canada

Go down the page a bit and read the discussion about similar orchids in the thread titled

Help for Dendrobium Elfin Gem and canaliculatum

Which may give you some more hints.

Houston has extreme humidity. Galveston which is tropical and similar to Hawaii is only 35 minutes away. I lived on Oahu for 3 years. It was just as hot as Houston!

Houston winters are for the most part mild to moderate. My roses don't complain :)

What does moderate mean in the context of USA Climates? It is " moderate" here and roses are in bloom in most front gardens .

I tried growing Den. Isami Doi (similar orchid to yours) outdoors in a warm spot and it declined.

Maybe get some local advice from the Houston Orchid Society.

Those cold hardness zones are useful but have limitations. For instance I grow Encyclia tampensis (Native To Florida) without a problem while very warm growing Dendrobiums are difficult.

It rarely freezes here. 30's is low for us.

Fahrenheit

Yes, the label is incorrect and you will not/may not have a problem till next winter. It is winter here, the sun is shining and near midday it is 14C. Low Last night 5C. That is why I have warm growing Dens. in a glass-house.

Where some of ancestors of your orchid are growing the temps are now in the 25 to 30C range with lows last night around 20C.