Which Coelogyne do you have? Most do require cooler temperatures at certain times of year and require more shading than say a Cattleya.

They will grow a new pseudobulb late spring/early summer provided there are growth eyes present on the pseudobulbs.

Just as a guide, Coelogyne cristata which is a beginner's orchid here needs winter night temps in the 40 to 50 range, winter day temps in the 60 to 70 range.

I believe its a Coelogyne cristata.
I forgot to mention I've placed the plant into a large plastic bag to maintain humidity. If I give it such cold temperatures, won't that cause rot? Or are coelogyne relatively rot resistant? Thanks again.

The cristata can be grown in normal temps but will still survive and grow in the temps Arthur gave.

I got mine two or three years ago in a going out of business sale and it was in sad shape when I got it. This is the bloom {{gwi:154496}} and this is what the whole plant looks like in a 6" basket {{gwi:154508}} It is just finishing the bloom cycle now.

I grow in a g/h, lowest temp is 60 and never above 85. My humidity is all over the spectrum. I grow it in a CHC mix, give it lots of water in the summer and in the winter it gets watered when dry. Some of the flower spikes are already starting to make their new pbulbs.

I have a friend in OH who grows this inside her home in the winter under hot T5's, outside in the summer.

I would remove the plastic bag for air circulation and give it as much light as you would to bloom a cattleya.

Brooke

How do you tell someone in Canada how to grow anything? Here is a pic. Not my orchid. It is in a hanging basket and the owner has been putting off doing her duty of dividing, tidying up and repotting.
It is one gorgeous orchid as a click on the thumbnails in the post above will show. But it tends to sprawl and get large. The plant is hanging under a tree to get protection from the worst of the summer sun in the middle of the day.
My guess is that it might do better indoors (in Canada) with the temperature range that Brooke suggests.
{{gwi:154511}}

If you have cleaned it up and it is in sphagnum, it will do fine. Keep it moist, cool and in bright light. Where they grow in the western Himalayas they get fog all year.

Don't disturb it and you ought to see new growth soon. Even if you don't get sprouting right away, don't make changes because you will only confuse it.

The link below is about mooreana which grown differently than cristata.

Here is a link that might be useful: Dividing Coelogyne mooreana

Thanks for all the good tips!
I'm only worried that the plant is too stressed to recover in regular conditions. One of the last two pseudobulbs rotted as well. The last one seems to be doing fine but its very small. I think at this point I have to treat it as cutting. I've grown a dendrobium from a cane cutting in a plastic bagie with moss, but I think the coelogyne will rot if I seal it up. (I've taken it out of the bag at this point) Will the plant put out new roots before the last bulb runs out of resources?

Dear All,

Thanks for all the info above. I love Coelogyne and I bought a few plant tiny plants.

They are C Trinervis, C Testacea and C Rochussenii. I’m living in tropics in Malaysia and it’s hot and sunny throughout the year and rain on occasions. Temperature ranging fr 30-34•C day time to 24-26•C at night all depending where it’s a cloudy or a hot day.. Humidity is not a problem here as sweating is not an option.

I kept my Ceologyne under shades at the verander and perhaps water it 2-3 days once. I notice all my bulbs are shivelling or shrinking. Any suggestions how to plumb it back and what is the cause of it? Between, I notice afternoon & evening sun does get to the plants as the verander faces West. I’m sorry I’m still a rookie in growing orchids. Thanks for all the help!

As you can see, all greens and no flowers.

They do look miserable, don’t they??

Thanks

Suzan

Suzan. Talking the talk. You have three species Coelogyne. That is found in the wild and in the case of your plants the wild seems to be mostly tropical places. C. in orchid talk is short for Cattleya. Names for species do not start with Capitals.

The thread subject orchid Coel. cristata comes from elevation in the tropics and the weather today here where it is easy to grow is Min 6C Max 18C and it is Late Autumn.

Here is a pic. of one of your orchids, grown in tropical North Queensland. Scroll down through the comments to find the culture bit I inserted.

Coel.

Guessing the source of your problem is.....

Overpotting, that is a pot too large for the plant.

Unsuitable potting material, Sphagnum Moss. Holds too much water and the orchid roots drown. You are trying to copy the conditions where your plants grow in nature. Potting materials tend to be more arid in tropical places. Lava rock etc.

Hope this helps.