Shop Orchid Care OrchidTalk Orchid Forum Weather Station Links Nursery

Welcome to OrchidTalk Orchid Forums


The Friendliest Orchid Community on the Internet!


  •  » Learn to Repot your Orchids
  •  » Learn Orchid Care Tips and Secrets
  •  » Find the perfect Orchid for your Growing Environment
  •  » Chat with Orchid Growing Professionals

OrchidTalk - "Bringing People Together to Grow Orchids Better!"


Let us help you grow your Orchids better; Join our community today.


YES! I want to register an account for free right now!


Register or Login now to remove this advertisement.

Results 1 to 8 of 8
Like Tree9Likes
  • 4 Post By Brutal_Dreamer
  • 2 Post By orchid-man
  • 2 Post By cucubirds
  • 1 Post By coeruleo

Oncidium - Psuedobulb production without Flowering

This is a discussion on Oncidium - Psuedobulb production without Flowering within the Oncidium/ Intergeneric Information forums, part of the Frequently Asked Questions category; I've attached a picture that clearly shows what I'm talking about. 3 months ago, in ...

Click here to increase the font size Click here to reduce the font size
  1. #1
    cjgroen is offline Junior Member
    Join Date
    Apr 2012
    Gender
    Male
    Posts
    6

    Default Oncidium - Psuedobulb production without Flowering

    I've attached a picture that clearly shows what I'm talking about.

    3 months ago, in the beginning of summer, I began to fertilize my oncidium with fairly low amount of fertilizer. (1mL of 10-10-10 per 1000mL of water). On two ends of the rhizomome two new psudobulbs produced beautiful leaves - nice thick cuticle, glossy, shinny - gorgeous. The started to become blemished, like the old established leaves (>1 year old leaves). I read on this forum that when the plant gets adequate bright light blemishes in leave tissue can occur and are natural (mine were getting about 500 micromols of photons per metere per second with my artifical and natural light if that matters, so 1500 mmol/m-2/s-1 than direct sunlight on a bright day fyi).

    Four weeks ago all four leaves from the top of the psuedobulbs died off - why, they seemed like healthy leaves, no standing water on them regularily, was not burning spots with cold mist water. Any ideas?

    Furthermore- now another two psuedobulbs are being produced - without the old ones flowering, as seen in the image AND a well established leaf (in black) is beginning to die off.

    Why did my leaves fall off, psudeos not flower before producing another set, and why are old, well established leaves dying as well? Any more help is much appreciated.

    I understand that lvs could just be entering sensecense, as I Fertilized between May 21st and August 8th, once a week (every other watering, with misting in between in a high humidity tank).

    Name:  IMG_4507.JPG
Views: 554
Size:  64.2 KB

  2. #2
    Brutal_Dreamer's Avatar
    Brutal_Dreamer is online now Dreaming with my eyes open...
    Real Name
    Bruce Brown
    My Grow Area
    Greenhouse
    Favorite Orchid(s)
    Cattleyas & Slippers
    Join Date
    Mar 2003
    Gender
    Male
    Location
    Arkansas
    Posts
    33,846
    Member's Country Flag

    Default

    Better check the roots on this one. The mix looks like it is dark and may be retaining too much water and causing root rot which will in turn lead to leaf drop and lack of flowers.

    cheers,
    BD

  3. #3
    cjgroen is offline Junior Member
    Join Date
    Apr 2012
    Gender
    Male
    Posts
    6

    Default

    Brutal Dreamer- It mix is dark because I had watered this immediatley prior to photographing. I will check roots to be sure, but new roots have been developing and appear healthy (but that is on the top of medium). I water every 6-10 days, but the entire plant is in a humidity tank. Medium is a mix of 50% coconut husk, 30% chipped bark and bark fiber, 10% sphagnum/more absorbant fiber, 5% perlite and 5% rock/crushed rock.

    Thoughts?

    ---------- Post Merged at 04:23 PM ----------

    I just looked, and the medium is loosely packed still (potted since August 2012 or April 2012, sorry can't remember). Medium is not overly wet, no standing water, just damp. Medium stays in with very healthy appear roots, so I will just transfer it into an equally large pot but with slotted sides to help dry it out after watering and allow more humidity into root mass.

    Thoughts?

  4. #4
    orchid-man's Avatar
    orchid-man is offline Not Normal
    Real Name
    Murray
    My Grow Area
    Greenhouse
    Favorite Orchid(s)
    Oncidiums.Odonts and alliance
    Join Date
    Mar 2006
    Location
    Auckland new zealand
    Posts
    1,187
    Member's Country Flag

    Default

    Quote Originally Posted by cjgroen View Post
    Brutal Dreamer- It mix is dark because I had watered this immediatley prior to photographing. I will check roots to be sure, but new roots have been developing and appear healthy (but that is on the top of medium). I water every 6-10 days, but the entire plant is in a humidity tank. Medium is a mix of 50% coconut husk, 30% chipped bark and bark fiber, 10% sphagnum/more absorbant fiber, 5% perlite and 5% rock/crushed rock.

    Thoughts?

    ---------- Post Merged at 04:23 PM ----------

    I just looked, and the medium is loosely packed still (potted since August 2012 or April 2012, sorry can't remember). Medium is not overly wet, no standing water, just damp. Medium stays in with very healthy appear roots, so I will just transfer it into an equally large pot but with slotted sides to help dry it out after watering and allow more humidity into root mass.
    Keep the temperature about 68-75 during the day and down to about 55 at the night.


    Thoughts?
    Oncids do not like coconut- they hold to much water,sodium chloride(salt) and can go off faster than sphagnum most.

    I would be re-potting it into a pot that is just large enough to hold All the live roots - a 2 inch pot if need be. The potting mix would be straight bark with no cambium layer or wood included.

    Place the re-potted place where it gets GOOD light and air movement - if the leaves do not mover in the air movement then its not getting enough air.

    Water the plant and let the mix ALMOST dry out before watering again, even misting the plant/pot so as to moisten the top of the mix about sunrise ,but the top of the mix must be dry within an hour or two. Fertilize about once per week at about 1/2 strength.

  5. #5
    cucubirds is offline Senior Member
    Join Date
    Feb 2013
    Gender
    Male
    Posts
    188

    Default

    When you do repotting, try soak the whole plant in fungicide spray for about half an hour to prevent any possible rot. The yellowing leaf should be removed too.

    Happy growing.

  6. #6
    wonderlen is offline Senior Member
    My Grow Area
    Windowsill
    Favorite Orchid(s)
    Vandaceae, Den, Paph.
    Join Date
    Mar 2007
    Location
    Calgary, Canada
    Posts
    199

    Default

    Oncidium do not like wet feet, and you should treat it like Cattleya. I would def split the plant into two and pot it in smallest pot possible. prob 3-3.5 pot. Use course bark mix, with lots of charcoal and pellets.

  7. #7
    kdennis14's Avatar
    kdennis14 is offline Senior Member
    Real Name
    Karen
    My Grow Area
    Windowsill
    Favorite Orchid(s)
    I love them all.
    Join Date
    Jul 2014
    Gender
    Female
    Location
    Central Florida
    Posts
    254
    Member's Country Flag

    Default

    I too have an onc. that is not doing well at all. I had read that planting it in Spanish Moss may help if it is misted everyday. Does anyone know about growing in Spanish moss? We have tons of it around here.

  8. #8
    coeruleo's Avatar
    coeruleo is offline Night Bloomer
    My Grow Area
    Porch/Patio.
    Favorite Orchid(s)
    Vanda
    Join Date
    Apr 2012
    Gender
    Male
    Location
    Los Angeles, CA
    Posts
    1,302

    Default

    coconut chunks are not good for oncidiums. i learned that the hard way on a few expensive ones. i use a small bark mix with some treefern fiber or small chunks, added semi hydro pellets, bits of sphagnum moss etc, then i put a pd of moss on top of that. it drains really well, and stays moist, not wet for a few days. i water once or twice a week.

Similar Threads

  1. Oncidium not flowering
    By rosie in forum General Orchid Culture
    Replies: 8
    Last Post: September 19th, 2013, 05:46 PM
  2. first flowering Oncidium Orchid
    By orchid-man in forum Phalaenopsis, Oncidium, & Intergenerics IN BLOOM
    Replies: 10
    Last Post: October 23rd, 2012, 12:10 AM
  3. Help w/ ID of this psuedobulb orchid
    By brandankinfortpiercefl in forum General Orchid Culture
    Replies: 12
    Last Post: April 11th, 2008, 01:13 PM
  4. Den. Shriveled Psuedobulb question
    By muddhb in forum General Orchid Culture
    Replies: 10
    Last Post: March 8th, 2008, 11:29 AM
  5. Flower Production
    By Bikerdoc5968 in forum General Orchid Culture
    Replies: 9
    Last Post: January 22nd, 2008, 10:45 PM

Tags for this Thread

Posting Permissions

  • You may not post new threads
  • You may not post replies
  • You may not post attachments
  • You may not edit your posts
  •  
OrchidTalk --An Orchid Growers Discussion Forum brought to you by River Valley Orchidworks. A World Community where orchid beginners and experts talk about orchids and share tips on their care, cultivation, and propagation.