dendrobium nobile dropping leaves + new shoot growth?

[djuna]

is this normal? i have only been misting when the canes become too shrivelled. where i keep this plant, nights have been 13C since the start of the month.

djuna

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[ryrycochinco]

---------- Post added at 06:27 AM ---------- Previous post was at 06:22 AM ----------

Dendrobium nobile's are supposed to loose their leaves during their dormant season, its fine as long as the canes remain green. As for the new growths I wouldn't complain, Although that is strange for a dormant plant.

[TOMMYMIAMI]

When did you stop fertilizing? It is recommended for them to stop fertilizing in August not to provoke keiki growth in dormancy?

[djuna]

hi. i am certainly not complaining, ryrycochinco, but am always curious when something new happens. i don't want to miss anything!

tommymiami, i stopped fertilizing at the close of july. the new canes are very fat and look about ready to burst but there has not been anything coming out in the way of keikis or buds yet.

there are two new shoots coming out of the base of two of my four new canes.

also long before that, back in early october, two new keikis emerged from one of the two old canes.

at this point, i am just not sure whether i ought to withhold further watering or continue as usual.

would be nice to know which cane is actually being referred to when instructions suggest to only water so that the canes don't shrivel. do they mean the year's newest canes or the old canes?

it seems that the old canes begin to shrivel first before it commences with the newer canes since i understand the backbulb serves as a sort of reservoir. i usually mist when the older canes begin to shrivel too much.

[TOMMYMIAMI]

If you stop fertilizing in July than you did everything good, think, so if you have new growths, than I guess your plant just comes out of dormancy now and starts to grow. Regarding the misting, I have no clue, this will be my first year giving winter rest, and it is still extremely warm here in Florida, so my mobile dendros just start to loose some leaves, and some has even growths still growing. I am just watering less now and stopped fertilizing in August. Will see

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[Vanda lover]

I always have trouble with this one. Mine got some flowers during the summer so I think it was confused. The lady who sold it to me said that it doesn't need a rest. After 2 years I decided that she was wrong and have been trying to get it right ever since. I have it on a bright, cool windowsill close to the glass and I am gradually reducing water. It looks better this year, so I have hope.

[djuna]

not counting the failed rescue of a neglected and badly shrivelled specimen from my mother-in-law, this is also my first winter with a dendrobium nobile. i must have already gone through at least a dozen websites, not to mention countless pages of pdf guides, reading up on winter rest and yet actual practice produces a cascade of new questions.

short of someone who has gone through these beginner's anxieties with both peace of mind and the plant surviving through the winter in blooms (or keikis and lessons learned), answering our endless questions, it seems there is nothing to be done but to run the gauntlet ourselves.

but that is the beauty of it i suppose.

[Vanda lover]

Originally Posted by djuna

not counting the failed rescue of a neglected and badly shrivelled specimen from my mother-in-law, this is also my first winter with a dendrobium nobile. i must have already gone through at least a dozen websites, not to mention countless pages of pdf guides, reading up on winter rest and yet actual practice produces a cascade of new questions.

short of someone who has gone through these beginner's anxieties with both peace of mind and the plant surviving through the winter in blooms (or keikis and lessons learned), answering our endless questions, it seems there is nothing to be done but to run the gauntlet ourselves.

but that is the beauty of it i suppose.

I know what you mean. I read everything I could find on it and I did get bloom, but not the kind of bloom you see on the ones that are sold at orchid shows. Mine always only have a few flowers. Last winter I don't think I watered enough. This time I'm not letting it shrivel as much. Now I have also learned that I should stop fertilizing in July, which is earlier than I have been doing.

[NYCorchidman]

I highly recommend that you visit yamamoto dendrobiums website and read about the culture information.

They are one of the best in hybridizing and distributing nobile hybrids, and most (if not all) popular hybrids out there in today's market are from them.

They provide easy to follow, yet correct information as to how to care for these plants.

I understand your frustaration. Some people have no clue what they are telling others, only further worsening the confusion. lol

By the way, 13C is nothing for these plants. They can take it down to freezing without issues when kept dry.
Many varieties (hybrids) will respond to even 13C and initiate spikes, but it is not cool enough to suppress new growths, although it is rather odd that your plant decided to grow.

I guess you have two options. Keep it warm and encourage the new shoots to grow normally through this winter. This way, you can have all the canes to flower at the same time next season.
Or, you can just forget about what will happen to the new shoots now, and continue on with the winter treatment so you can enjoy the flowers come spring.

If you choose to take the winter treatment route, then I find that leaving them in the temperature of under 10C for good two months or so bring out a fantastic results!

I love them and grow many, so feel free to ask questions.

[djuna]

Well, could you please help clarify the instruction about misting to prevent excessive shrivelling? Is that referring to the year's new pseudobulbs or to the old canes on which they depend? i am under the impression the older canes will shrivel first before the new ones do.

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