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10-11-2006, 12:09 PM
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Senior Member
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Join Date: Sep 2006
Zone: 5b
Location: Zionsville, IN
Age: 27
Posts: 269
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Oncidium psychopsis not blooming
Hi! I have a quick question. I have an oncidium papilio/psychopsis (I don't have the exact name with me right now), and although it has a flower spike, each time a bud forms, it dries up, doesn't bloom, and continues on it's merry way to another bloom, which fails to flower. Does anyone have any advice as to the reason?  The plant looks healthy and has nice looking roots, but something is wrong. Thanks so much!  |
10-30-2006, 10:07 PM
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Jr. Member
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Join Date: May 2005
Posts: 2
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Oncidium psychopsis not blooming
Hi - If you are growing in a greenhouse my first thought it that you might have a small gas leak that makes the flowers not bloom. You might also have too much of a variance in temperature, or a cold fan or hot heater hitting the flower.
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Syd - Denver, CO
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10-30-2006, 10:19 PM
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Moderator
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Join Date: Jun 2006
Zone: 9b
Location: Central Florida
Posts: 2,947
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Bud blast...here's a few causes.
1. low humidity
2. hot air from furnaces or cool, dry air from a/c directly blowing on the orchid
3. over-or -underwatering
4. water standing in the budes or bud sheaths
5. ethylene gas from ripened fruit
6. pollution
7. light that's too bright on the developing flower bud
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Cheryl
“Although the tongue weighs very little, few people are able to hold it.”
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10-30-2006, 10:37 PM
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Moderator
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Join Date: May 2005
Location: Queens, NY, USA
Age: 28
Posts: 7,299
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Gosh, it seems if things aren't just perfect then the plant throws a fit. Talk about a goldielocks complex!
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All that is gold does not glitter,
Not all those who wander are lost;
The old that is strong does not wither,
Deep roots are not reached by the frost.
-J.R.R. Tolkien, LOTR, Fellowship of the Ring
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10-31-2006, 08:00 AM
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Senior Member
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Join Date: Sep 2006
Zone: 5b
Location: Zionsville, IN
Age: 27
Posts: 269
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Thanks for your help! I'd say the goldielocks complex is right! We'll see, I'll try to keep an eye on thing to make sure that conditions are balanced. I just wish I knew where to start! |
10-31-2006, 10:19 AM
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Senior Member
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Join Date: Oct 2005
Location: Mid Michigan
Posts: 544
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Add critters to your list of possible problems. Examine the plant (especially the flower bract) carefully for pests. I'm thinking scale or mealy bug... Probably not it, but at least it is easy to check.
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Rob's Rules:  http://littlefrogfarm.com
1) There is always room for one more orchid
2) There is always room for two more orchids
2a) See rule 1
3) When one has insufficient credit to purchase more orchids, obtain more credit
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10-31-2006, 10:41 AM
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Senior Member
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Join Date: Sep 2006
Zone: 5b
Location: Zionsville, IN
Age: 27
Posts: 269
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O.K., I will definitely take a look for that. *fingers crossed* I hope it's not scale! That's the worst!!
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10-31-2006, 03:32 PM
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Senior Member
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Join Date: Jun 2006
Location: Ontario, Canada
Posts: 617
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I had the same problem with my Psychopsis. It turned out that the inflorescence was too close to the lights....low humidity and high heat blasted each bud. As soon as i moved it away it started to bloom normally again.
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10-31-2006, 03:38 PM
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Senior Member
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Join Date: Sep 2006
Zone: 5b
Location: Zionsville, IN
Age: 27
Posts: 269
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Did you just leave the previous "blooms" as they were and moderate the conditions or did you have to cut back the stalk and go from there? Thanks for your help!
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10-31-2006, 04:16 PM
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Roots are good
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Join Date: Sep 2006
Zone: 5a
Location: Cadillac, Michigan, USA
Posts: 7,857
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FWIW, I move most of my Oncidium class orchids away from the bright sunlight after they have set the spikes. For instance my Bllra Peggy Ruth Carpenter is about to bloom and has two more spikes developing (pictures to come - I am sure!) I normally grow this in full sun in a south window, but have moved it to the back (about 24" away from window) for spike developement. This seems to work for me. BTW the position is about same foot-candles as for Phalenopsis blossoming (500-1000).
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Ross
http://orchids-ross.blogspot.com/
I don't do most Dendros or large, "floofy orchids". For me it's minis (like Angraecoides), Paphs, and others that crept in somewhere along the line. See my orchid list for complete collection (usually not current.)
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