Which means "temperature tolerant"?

[King_of_orchid_growing:)]

Very few can tolerate full direct midday summer sun.

A few Maxillaria spp. can. Bifrenaria spp. can as well.

Are there some particular species you're looking to grow?

Are you asking to find out about whether the orchids you plan on getting are suitable for your growing environment as well as your growing habits?

Could you be perhaps asking about some orchids that not many people on the OB talk about, such as orchids from the following genera?

Orchis spp.?
Serapias spp.?
Dactylorhiza spp.?
Cephalanthera spp.?
Himantoglossum spp.?
Barlia spp.?
Epipactis spp.?
Anacamptis spp.?
European Habenaria spp.?
European Platanthera spp.?
Ophrys spp.?
European Cypripedium spp.?

It appears that a lot of your questions lean towards regarding European terrestrial orchids or even terrestrial orchids in general.

Or perhaps are you asking mainly about Dendrobium spp.?

If you are asking about Dendrobium spp. which section of Dendrobium are you interested in knowing about?

[alessandro2011]

Originally Posted by King_of_orchid_growing:)

Are there some particular species you're looking to grow?

Are you asking to find out about whether the orchids you plan on getting are suitable for your growing environment as well as your growing habits?

Yes, now i collect data for find out which variety of orchids soddisfy the follow requirements:
- capable of grow outdoor even on winter with 0°C or even little lower (and i find information on the topic:
Outdoor Epiphytic Orchids for Temperate/Mediterranean Climates
- for the scent on the topic:
Orchids with a strong scent
- direct sun light, for the moment, i haven't found many information, because i have a very small terrace that is almost totally exposed at the sun especially during the central hours of the summer day and where i can't put nothing because is necessary even for hang clothes to dry clothes, so each day there is something.
For example i see a very interesting topic, on one italian forum, where a person have burn almost completely a variety of vanda, for only a small mistake and was sufficient only 2 hours ...

And, naturally, after i have a list, i can look even if i like a certain flower or not.

This assumption that once i have found a variety that meets all the above requirenments, is available on my Country, and this isn't something that i can take for granted ...

However I have no hurry. I can wait even years.

Note:
While on the topic about low light orchids, i asked only for a crazy idea,in the possibility of putting something on the stairs where i live, when there isn't never direct sun light, during the winter the light is few, while during the summer is better but obviously there is always less light respect the outside.
But on that case there isn't only the problem of light but even constant temperature and i read that many orchids require a drastic temperature change between day and night for make flowers ...
Also, on that case, i fear i can't consider orchids with scents because i don't known if some neighbors would do some stories ...
And naturally without using light, fan, etc.

[King_of_orchid_growing:)]

32 F (0 C) is very low for many of the tropical orchids.

Then there's that full direct midday sun...

This is tough to figure out. Not many orchids satisfy both conditions.

The only ones I can think of are Cymbidiums.

There are some that can tolerate full midday sun and temperatures down to 32 F. Particularly the species from China, Japan, or Taiwan, such as Cymbidium formosanum, Cymbidium aloifolium, Cymbidium sinensis, Cymbidium dayanum, or Cymbidium goeringii, just to name a few.

Some of them are very fragrant, such as Cymbidium sinensis.

Some species of Cymbidium are not really all that large either (some get only as tall as approximately 50 cm [1 1/2 ft]).

Some also have a pendulous inflorescence ("Cascading Cymbidiums").

The flowers of some of these Cymbidium species can also last for a fair amount of time (some about 1 - 2 weeks; others about 1 month).

[King_of_orchid_growing:)]

I thought it over a bit more, and I think that Den. kingianum and Den speciosum may be able to handle it down to 32 F (0 C). I don't know if they can handle temperatures any lower than that though.

Den. kingianum can definitely handle full midday sun.

Den. speciosum could quite possibly handle full midday sun as well.

[Paul Mc]

I believe the lowest the Dendrobium kingianum should go (or at least this is what I was told by a grower when I bought mine this year) is the lower 40's F at night.

As for the midday sun aspect of the kingianum, that's good to know. I've had it out in the sun and the leaves were way too warm for my liking so I moved it. It did not look damaged, but I wanted to be careful as this is my first year with it.

[King_of_orchid_growing:)]

Originally Posted by Paul Mc

I believe the lowest the Dendrobium kingianum should go (or at least this is what I was told by a grower when I bought mine this year) is the lower 40's F at night.

My Den. kingianum has definitely experienced temperatures as low as 36 F (2 C). As far as 32 F (0 C) is concerned, it may be able to handle it, but it gets riskier and riskier to grow it the lower the temperatures get.

[GardenTheater]

Anther option is to create shade with a dwarf citrus tree and then grow a Laelia anceps under it. I use to have my Lealia outside under my potted dwarf Eureka lemon tree. Both can take a night or more of 0C.

[GardenTheater]

Oh I forgot to mention the dwarf citrus will love all the bright sun and shade your orchid.

[gnathaniel]

I had a Den. kingianum that survived some nights outside at around 30 F/-1 C with no apparent stress at all. Then I got cocky, left it outside on a night that got down to about 27 F/-3 C, and it froze solid.

--Nat

[alessandro2011]

Originally Posted by GardenTheater

Anther option is to create shade with a dwarf citrus tree and then grow a Laelia anceps under it. I use to have my Lealia outside under my potted dwarf Eureka lemon tree. Both can take a night or more of 0C.

Unfortunately i haven't space for a tree, however i like the flower of Laelia anceps but i think also is a pity that they seem haven't scent ...