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  #11  
Old 11-07-2021, 10:25 AM
SADE2020 SADE2020 is offline
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Quote:
Originally Posted by rbarata View Post
I don't have experience with Phal den types so I can't help you
But there's one thing that caught my attention: you've cut the pbulbs of you nobiles. Don't do it until they are really dry as the bloom mostly from old leafless canes. I had some 3 year old pbulbs blooming.
That was the 1st year, I followed the grower instruction, but then I reed hear not to do it.

But the grower even tells you that is very-very difficult to grow, I didn't realize at the time that ..I could do better!

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  #12  
Old 11-07-2021, 10:45 AM
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No fertilizer in winter for sure. Maybe water less, but with all the leaves, I would not stop water... actually, I learned the hard way that if the environment is dry (like mine) they always need some water even in winter. If you can let them get somewhat cold, that may help blooming. (I don't dry my deciduous Dens in winter but grow them outside, they get cold and bloom nicely) Interesting that one of them is actively making new roots (which would indicate potting time), usually they don't do that until spring. They are hybrids, so depending on what else was in the parentage, they may not behave like Den. nobile at all. (Here, one can buy ones grown in Hawaii in full bloom, in any season, once settled into their not-Hawaii environment, those off-season blooms may not happen)
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  #13  
Old 04-24-2022, 05:23 PM
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Bumping this Up!

I got 4 nobile in bloom from the old canes and nothing from the New. And, boy ..I did take good care of these one !. Could they bloom latter maybe ?


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  #14  
Old 04-24-2022, 05:56 PM
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The grower says the key is to not fertilize after August, and to give cool winter nights.
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  #15  
Old 04-24-2022, 06:01 PM
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Actually, blooming from old canes is natural... In fact, with Dendrobiums in general I don't cut old leafless canes until they are shriveled and brown and rather brittle and very clearly dead. So under ideal conditions they can bloom from newer canes that still have leaves, but the old leafless ones are what it does naturally.
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  #16  
Old 04-24-2022, 06:11 PM
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Ok!
Follow all the above..
But in great conditions not blooming from the NEW cane ... Is a delay or nor food at all?
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  #17  
Old 04-24-2022, 06:21 PM
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Well, any food in winter will tend to reduce blooming. I suspect that temperature has something to do with it... a commercial grower can give it precisely the amount of cooling that it needs to trigger blooming. They also probably mess with light... lots of these get grown in places like Hawaii that have days and nights equal essentially all year long, cool breezes if they are grown on mountain slopes (just a little elevation makes a difference) So getting them to "perform" when they don't have the perfect conditions is a challenge.

I usually put my Den, nobile hybrids (and the species) in a place where they won't get watered by the sprinklers in winter (I still give them a little but less than the other orchids) and I get some blooming but not great. Last winter I never got around to moving them so they got watered with everything else, nobody got much fertilizer ... but they got the cool nights. And... amazing... I got the best blooming from them that I have had in years. So "dry" may be a trigger (I learned the hard way that "dry" has to be moderated, my "dry" is dry enough to kill) , but "cool" without the "dry" seems to be a better one, at least at my house.
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  #18  
Old 10-11-2022, 06:09 PM
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Hi!!! So, the Dend Nobiles, which have had super developments of several canes this summer. They are now prepared to be left in a non-fertilizer... normal irrigation garden space.

But, what about the direct sun during the mornings in winter? my notes said :

The lighting values may be significantly lower during the cooling. It
is common to implement a short day of 8-10 hours for the duration of these phases

Any comments on the best garden lighting?
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  #19  
Old 10-11-2022, 06:58 PM
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Thinking about the habitat of Den nobile and its relatives... In the summer, it experiences monsoonal rain and lots of clouds. Not much sun. In the winter,however, there is little or no rain (but there is heavy morning dew that gives the plants plenty of moisture) No rain = no clouds, and so in winter the plants experience much more sun. Of course the sun angle is lower - these come from the Himalaya foothills, high elevation southeast Asia, south-central China, temperate latitude not tropics. So... that morning sun is likely fine - even ideal.
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  #20  
Old 10-11-2022, 11:09 PM
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They can take as much winter sun as possible without burning. Did you keep fertilizing until now? Yamamoto says to stop in late August or early September. They say fertilizing too late, or using too much nitrogen, is the commonest cause of poor blooming.
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