Orchid of the Week: Dendrobium Aggregatum

Surprise! Bet you thought you weren’t going to see an Orchid of the Week post today, didn’t you? This regular feature has totally fallen by the wayside lately, and for that I apologize. I’ve actually been busier with work over the past few weeks, and then last Friday I was out and about preparing for that hurricane thing that happened.

Anyway, this week I’m featuring another orchid from my own collection, the Dendrobium aggregatum. For the record, mine has not bloomed yet, but I’ve only had it for a few months. This orchid is a bright, cheery plant that can produce loads of yellow blooms:

Photo credit: David in SWGA, Flickr

Let’s take a closer look at those blooms:

Photo credit: orchidandoshop.it

It just makes me happy to look at these little guys. They look a little like pansies, no? Apparently the blooms have a light scent, which is a bonus in my mind.

Photo credit: Guilherme Corigliano, Flickr

This cute orchid is native to the Himalayas, Burma, Indochina, and the Malay peninsula. My own specimen is doing quite well; when I first bought it, its roots were pretty much all rotten so I cut them away. Recently, the plant has put out several new pseudobulbs—about seven or eight of them! So it’s definitely on the up-and-up. Here’s a pic I took of the plant just a couple days ago:

My Dend. aggregatum from Lowe’s

According to Wikipedia, this orchid is also known as Lindley’s Dendrobium, or Dendrobium lindleyi. Its scientific classification is as follows:

Subfamily: Epidendroidaea

Tribe: Dendrobiaea

Subtribe: Dendrobiinae

Genus: Dendrobium

Have a great Labor Day weekend, everyone!

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  1. OK, I need help here and it looks like you’re just the right person to provide it. I’ve been cultivating various different orchids for about 10 years and one big beautiful Dendrobium aggregatum is among them. Most of my orchids produce incredible bloom but this Dendrobium which I’ve had for about 2 years looks healthy and produces tons of lush green leaves but no bloom.

    When it comes to lighting, potting soil, hydration, fertilization and aeration; I think I’m doing everything by the book. But apparently there is something wrong because I have yet to see a single yellow little flower.

    Can you shed some wisdom on this?

    1. Hi there! I wish I had some good advice for you. It sounds like you’re way more experienced with orchid-growing than I am! I wonder if your Dendrobium hasn’t flowered because of the temperature? I know that for Phals to bloom, they need a drop in temperature at night. Just a guess, really. Sorry that I’m not more help…I hope you are able to get your orchid to bloom at some point!!

    2. Re: Hanna’s comment about her healthy but not blooming dendrobium, I suspect (like most stubborn healthy non-blooming dendrobiums) that it’s not been getting it’s “winter rest”.

      Quite a lot of dendrobiums go through a dry (but not desert-like…) winter period in the wild; without this, they seem to concentrate on just growing and churning out keikis rather than creating buds and flowers.

      Some people have suggested that the key thing in “winter rest” is absolutely no fertilisers, but just plain water (RO/distilled/rain), rather than the dryness; they should probably be kept slightly dry too, and then rewarded once you see buds forming with spring/summer “rains” and resuming your regular fertiliser schedule.

      Might be worth trying the “you need to be cruel to be kind” approach with your dendrobium this winter!

  2. Hi I am new here, just chose blogsites from the links at left of blotanical. This is so lovely, i saw it here during last months Garden Show but forgot the name. Now thanks for the ID. I also took its photo, because that was the first time I saw it. So it flowers also in cold climes, amazing!

  3. Hi, those blooms are lovely, your den looks lovely too. About your kekis I looked on one of my phi this morning and saw something that looks like one, if it is I would be so excited because it would be my first, I’m keeping my fingers and toes cross.

    1. Hi there, I recently bought the same plant in the orchid show in April,2013, I planted it in a coconut shell and hang it under some trees where there’s lots of shade, light and its very cool there, within 3 weeks the plant send out one pseudo bulb and to date no growth has taken place, i however moved the plant to another tree where there is more light but no activity has taken place, the bulbs are green and healthy I use 20/20 once a week to induce growth. I do not over water but nothing is happening can you help me. Also I got a phalaenopsis with 2 leaves about 3-5 inches long and I have no problem with it I’ve gotten this plant to grow like mad, it sends out leaves 19.5 inches long but the spikes which are very long only gives me 2 flowers and currently the plant is flowering for the second time for the year(recently in august and a flower opened 6th October 2013) How can I get more blooms? As this plant finish flowering it sends out keiki so i cant cut the stem to induce flowers as with other phalaenopsis.

      1. Hi Carol,

        My Dendrobium aggregatum has put out several new pseudobulbs but hasn’t bloomed for me yet, so unfortunately I don’t really have any advice on that one from my own experience. I have read that they like high light, so it sounds like your choice to move it was a good one.

        With regard to your Phal, I’ve had the same issue with some of mine this past year. They put out spikes but only a couple of blooms. Honestly, I haven’t figured out what the issue is yet. Any readers out there have any insight into this issue?

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