Neomoorea wallisii - temperature requirements
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  #1  
Old 09-11-2021, 12:12 AM
Maru777 Maru777 is offline
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Neomoorea wallisii - temperature requirements Female
Default Neomoorea wallisii - temperature requirements

Hello everyone! I need a bit of help. I have gotten overly excited for a trip to Tamiami next month and I am pretty much trolling vendor sites for things that look nice. Hopefully I can still order some things in time for them to bring the plants to the show. Since I can’t really get plants imported to my island at any other time, I have added, shall we say, a number of items on my wish list. There is one though that I really like but can’t seem to find the temperatures it likes - Neomoorea wallisii. All the info I found on the internet says cool to warm. What does that even mean?!? Too wide a range for me to make sense of it. I live at the tropics so if this plant likes it cool, it will be toast. Quite literally. It seems to like humidity, which is fine, the air around here is basically soup, and seems to grow close to sea level, but it then says cloud forest and cool to warm. I am confused. What do you think?
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Old 09-11-2021, 01:39 AM
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I looked this one up. Now I want one!! It is gorgeous.

I can see the confusion... In IOSPE (orchidspecies.com) it is listed as Neomoorea irrorata, occurring a low elevations. Based on that, certainly tropical. It is supposedly a synonym for Nma. wallisii.

BUT Charles Baker, in Orchidwiz, does list it as Nma. wallisii - and gives the elevation range of 1000-1800 m. Are these the same plant??? It is possible that the two names refer to plants from different locations, although the DNA may say they are the same, could occupy different habitats.

But even 1000 m in Panama or northern Colombia is fairly tropical. Maybe a little more cold-tolerant than the sea level version, but certainly not requiring cold. So I think you're safe getting this one - if those two really are the same species, certainly an adaptable one.
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Old 09-11-2021, 05:06 AM
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wow, it does look like a really fancy phalenopsis.
I think the problem is that it seems to be so rare there is very little info on it, including where it even originally grew in nature.

Near sea level? Up in the mountains where night temps drop more?

Conflicting!

Generally cool to warm means nothing tropical hot and generally cooler winter nights but I think this one is a warm to hot grower based on where it is from.

Only if it is a really high mountain grower would it experience lower temps but I don't think it is so tropical temps for this one.

26-30 degrees C during the day and 18-24 degrees at night should be a good *is my guess.
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Old 09-11-2021, 11:21 AM
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The correct name is Neomoorea irrorata. The plant was first named Lueddemannia irrorata, and later moved first to Moorea then Neomoorea. It picked up the name wallisii when it was moved to Neomoorea but that was a mistake; it retains the first specific name given.

IOSPE says:
low-elevation, hot-growing plant;
wet year-round with even fertilizing all year;
hot to cool temperatures;
should be kept moist through the growth phase and less after the growths have matured.

Other sources show it as an intermediate, mid-elevation grower. These pages are no longer available at their original locations, but can be found at archive.org:
Neomoorea wallisii
Ionopsis: Krum Z. Sotirov

Read all these pages. I'm only summarizing them:
Hot-growing;
Intermediate temperatures;
Moderately bright light;
Maximum sunlight short of leaf burn;
Medium light;
Wet year round;
Somewhat moist mix, drier in the winter;
Damp but not wet, lots of water and organic fertiliser while in active growth and a dry winter;
Regular water and fertilizer in the summer;
Brief, cooler, dry and shady period in the winter;
New growths appear in autumn, but do not develop until the warmth of summer;
Ensure minimal disturbance of the plant.

Years ago somebody told me it should be able to grow well in my summer heat. It died when it got into temperatures over about 110 F / 43C. I decided not to try it again until I had a cooler growing space.

The plant I have now came from Ecuagenera in July 2020. It seems to have done well with lows on winter nights around 55 F / 12C and summer days up to 85 F / 30C, occasionally higher.

I read they don't like to be repotted. I have it in a wide, shallow terra cotta dish with small- to medium-sized pumice as the medium. This is so it has room to grow and doesn't need to be repotted too often. It gets watered thoroughly every morning with an automatic sprayer on a timer. Pumice doesn't break down, retains some moisture yet allows air at the roots. I chose that over LECA because this container with LECA would dry down to quite some depth each day in my heat, despite daily watering.

During a few days this summer when my automatic watering failed and it headed towards dry some of the leaves wilted and died.

The photo shows the pseudobulbs, not the leaves. They are about half the size of hen's eggs. The yellowing to brown leaf is from an old growth. So far it has not broken more than one growth at a time. I think I need to fertilize it more. It is slower growing than most of my other orchids. Now that I reread the above articles, I probably should fertilize it a lot more.

Neomoorea wallisii - temperature requirements-neomoorea_irrorata_20210911_seca-jpg

By the way, there were a lot of excellent articles written by Schmidt-Ostrander on the Canadian Orchid Congress Web site. They are no longer there, but you can find them on archive.org:
Articles on Orchids
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Old 09-11-2021, 08:09 PM
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Hi Maru. Don't know how much I can contribute but I got mine in an auction in 2017. Healthy plant but the gal couldn't get blooms and was too big. All my info came from IOSPE. It was in a 4'' plastic pot with large bark. Think she just had it growing inside in a sunroom. So I also kept it indoors on the floor in low light but then put it outside in temps from 65-95 degrees late Spring, Summer and early Fall(mostly shade). Well watered and fertilizer. Needless to say it needed a repot which I did just this past June into a 6''clay pot and large bark. There are about 10 pbulbs with leaves on 7. Roots are numerous and tend to grow upward like little spikes. Since I haven't killed it I'm optimistic. Leaves are very long, stiff and corrugated...quite a beast. But OH...to get a flower!
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Old 09-12-2021, 03:48 PM
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I wrote to Jay Pfahl to clarify what is listed on the IOSPE page. He responded:
This is a tough one as I have so many opposing references. Not one agrees with elevations. I can find collections from sea level to 2200 meters. That would translate that it is a hot, warm, cool and or cold growing orchid. If it is growing well as you have it keep it up as it is a seedling and it appears that it would be able to adapt to whatever conditions you give it as long as it is very wet.
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Old 09-12-2021, 09:20 PM
Maru777 Maru777 is offline
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Thank you so much everyone! I could not have asked for more than this! I really appreciate everyone's input and very useful information. I have put it in my shopping list to be picked up at the show. This list is becoming mighty long now
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Old 09-17-2021, 06:38 PM
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I noticed Ecuagenera is having a sale this weekend and they have this plant.
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