Difficulty getting my orchids to spike
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  #1  
Old 11-09-2007, 12:18 AM
basteh basteh is offline
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Difficulty getting my orchids to spike
Default Difficulty getting my orchids to spike

About a year ago I bought some beautiful orchids from a reputable online dealer. I bought a few different Phals, a Cattleya and a Vanda. I bought them at blooming size and I keep them indoors (I live in Chicago). I provide them with ample artificial light. And water them only when their mix is dry about an inch down. And I keep them over a humidity tray. Also, I have been putting them in a cooler spot at night (I've heard that they like that in order to start blooming). Its been a while and all I've seen is new leaf growth, no spikes! What am I doing wrong?
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  #2  
Old 11-09-2007, 01:16 AM
mayres mayres is offline
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Difficulty getting my orchids to spike Male
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What do you call "ample" artificial light? Cattleya and Vanda orchids need MUCH more light than Phalaenopsis orchids. Only the phal needs a cooling off period in order to stimulate a spike this time of year.
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  #3  
Old 11-09-2007, 12:53 PM
quiltergal quiltergal is offline
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When orchids won't rebloom it's usually due to a couple of culture issues. Inadequate nutrition, and inadequate light. If either or both of those two are deficient your plants probably won't bloom. Vandas in particular are heavy feeders, and can take full sun if you can provide it. I doubt seriously if Vandas will bloom under regular grow lights unless it's one of those mega output HID lights.

So what kind of lights are you growing under, and how often, how much, what kind of fertilizer are you using?
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  #4  
Old 11-10-2007, 11:21 AM
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Difficulty getting my orchids to spike Male
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Adding to Terri's "big two", don't forget that too much nitrogen can also stall or prevent blooming.
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  #5  
Old 11-10-2007, 04:35 PM
basteh basteh is offline
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Difficulty getting my orchids to spike
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I have my orchids under a 100W florescent 5000K light. I use a light meter and my Cattleya and Vanda are getting about +2000 fc of light. I am keeping my phals a bit further away from the light source, so they get around 1000 fc. When we get sunny weather, I put my high light orchids in a south facing window. They get plenty of light there. Could I be giving them light for too long? I have them under the lamp for about 14hrs a day.

As far as fertilizer goes, I have been using Schultz Orchid Food. Is there a better brand?

Thanks!
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  #6  
Old 11-10-2007, 05:40 PM
Ross Ross is offline
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Quote:
Originally Posted by basteh View Post
I have my orchids under a 100W florescent 5000K light. I use a light meter and my Cattleya and Vanda are getting about +2000 fc of light. I am keeping my phals a bit further away from the light source, so they get around 1000 fc. When we get sunny weather, I put my high light orchids in a south facing window. They get plenty of light there. Could I be giving them light for too long? I have them under the lamp for about 14hrs a day.

As far as fertilizer goes, I have been using Schultz Orchid Food. Is there a better brand?

Thanks!
Then, the only thing I would change is try cooling them down at night. Only a few degrees may help.
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  #7  
Old 11-10-2007, 08:47 PM
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The vanda can take brighter light than that.

When say you use Schultz, but you don't say how much or how often. It matters.
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  #8  
Old 11-10-2007, 09:31 PM
Lagoon Lagoon is offline
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Just becos' a vendor tells you they are blooming size always mean they are
If they truly are bloom size, then I would opt for more light.
I would flush out the orchids for the next few times and try epsom salts instead of your regular ferts - 1 teaspoon per 1 gallon, every 2nd watering for the next couple of weeks. Oh and more light

Just my nickle
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  #9  
Old 11-10-2007, 11:12 PM
Sandy4453 Sandy4453 is offline
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I was going to write exactly what mayres wrote, so......ditto!

P.S. Hi ya mayres! Nice seeing you here.
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  #10  
Old 11-11-2007, 07:17 PM
basteh basteh is offline
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Difficulty getting my orchids to spike
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I have been giving 1/4 tsp fertilizer per gallon. I only fertilize every other week. The schultz stuff says to only use 1/4 tsp per gallon. Should I use more? Should I fertilize more often.

As far as light goes, does more hours of artificial light help? Or should I just put them in a very sunny window for the short days we have this time of year?

Thanks for all your advice. I have never done this before and you all are a great help
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