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Dendrobium kingianum advice, please

last year
last modified: last year

I acquired this plant, with 5 pseudobulbs last November. All the pseudobulbs, along with a keiki, appeared to have bloomed previously.

Over the winter the only activity it showed, was the roots on the keiki got longer.

In April, 2 new pseudobulbs appeared and are growing on nicely. The keiki roots appear to have paused their growth, since the new pseudobulbs appeared.

Questions:

1: I presume D. kingianum is one of the Dens that only flowers each psuedobulb once. Correct?

2: The keiki is approx 70mm long, 3mm at the junction, and has just 2 leaves, with what appears to be the remains of an old flower spike. where the growing point would be. Is it normal to flower at such a small size?

3: Once they have flowered do the psuedobulbs ever grow any more?

4: Can I expect the new canes to flower next spring?

5: How many new psuedobulbs does D. k generally produce each year?

TIA

Fof

Comments (4)

  • last year
    last modified: last year

    If you look at a map of Australia the range of this orchid is roughly from slightly south of Sydney to slightly north of Brisbane.

    It is a miniature that flowers in spring and tends to form clumps so you will tend to get more than one new pseudobulb sometimes. The older pseudobulbs do not bloom.

    Common name is pink rock orchid.

    I have no idea how you would grow it in the UK.

    Mine are in a shadehouse with protection from the hot afternoon sun in summer. Forecast for today is mixed sun and showers.

    thefof Zone 8/9 UK thanked arthurm2015
  • last year

    Hi @arthurm2015

    Thanks for the response.

    There is no need for me to check the map, as I lived in NSW and Qld for nearly 30 yrs and am quite familiar with it growing on rocks and in craggy crevices.

    That is why, when I decided to try growing orchids, along with my cacti, I decided to experiment using D.k. I never quite worked out what I was doing wrong, but I managed to kill them, every time.

    Since returning to UK, I regularly visit public/open/botanic gardens. Imaging my surprise when I visited one of my local National Trust gardens, to find, growing on an ancient Dicksonia antarctica, this:



    Yes. A very happy and healthy D.k.

    This is growing outdoors, albeit in a frost free environment, and doing very well, thank you.

    That piqued my interest. Doing some checking on-line, I found it is rated as one of the easiest orchids to grow in UK. Plenty of info available, but with a few blanks, hence is the reason for my post.

    A couple of days ago, I decided to remove the keiki, and while doing so, I notice another new pseudobulb popping up. That is 3 it has put out, since I got it.

    Whooppee!! I guess I must be doing something right, this time. :-)))))

  • 6 months ago
    last modified: 6 months ago

    Hi all.

    Thought I would just give an update.

    By the end of the summer, it had thrown up 5 new canes. One of the original 5, I removed as it dried up, and the keiki, which I had just stuck in the same pot, started a new cane as well.

    I thought that all the canes it came with, originally, had already flowered, but no.

    After a period, where it obviously had a rest, it woke up.

    3 of the original canes and 2 of the new ones put up 6 spikes, and 2 more of the new ones have spikes starting to develope.



    As bonuses, a) even with my ancient, almost non-existent sense of smell, I can smell their perfume and b) I have been presented with a semi-double bloom.



    I couldn't grow it in its natural range, but I can grow it in UK. A very strange world.

  • 4 months ago

    I grow them indoors in Black Forest Colorado. Yours look VERY healthy! Good job!



    thefof Zone 8/9 UK thanked nicole