GCS Forum: Dendrobium Findlayanum from SGF - GCS Forum

Jump to content

  • 2 Pages +
  • 1
  • 2

Dendrobium Findlayanum from SGF

#1 User is offline   furret 

  • Advanced Member
  • PipPipPip
  • Group: Members
  • Posts: 427
  • Joined: 18-December 13
  • Gender:Male
  • Location:Ghim Moh

Posted 30 August 2014 - 08:13 PM

Hi guys this seems urgent to me...
So recently at SGF last sat, I bought a Dendrobium Findlayanum from the thai orchid stall, just yesterday night, I spotted the pseudobulbs of it turning yellow, not just that, they turned soft, like hollow soft, like a straw but softer. On one of its leaves theres also a black spot on it!
So I need your help to save the orchid,have tried seaching online for reasons but to no avail.... So HELP ME PLEASEEEE ! :D/>
Thanks
Furret
0

#2 User is offline   sthh 

  • Advanced Member
  • PipPipPip
  • Group: Members
  • Posts: 1862
  • Joined: 13-January 10
  • Gender:Male
  • Location:Sembawang

Posted 30 August 2014 - 09:00 PM

 furret, on 30 August 2014 - 08:13 PM, said:

Hi guys this seems urgent to me...
So recently at SGF last sat, I bought a Dendrobium Findlayanum from the thai orchid stall, just yesterday night, I spotted the pseudobulbs of it turning yellow, not just that, they turned soft, like hollow soft, like a straw but softer. On one of its leaves theres also a black spot on it!
So I need your help to save the orchid,have tried seaching online for reasons but to no avail.... So HELP ME PLEASEEEE ! :D/>/>
Thanks
Furret


You need to describe your potting medium. Eg. did the den. come with coconut husk? did you repot it? How your water schedule like? How much sun did the plant get? Is it placed in the open?
0

#3 User is offline   furret 

  • Advanced Member
  • PipPipPip
  • Group: Members
  • Posts: 427
  • Joined: 18-December 13
  • Gender:Male
  • Location:Ghim Moh

Posted 30 August 2014 - 11:04 PM

Sorry for the late reply... anyway, it is still potted in coconut husk, as for watering , I water once every 1-3 days depends.... my neighbour also waters once in a while, as for sunlight, my place get indirect morningsun and the sun from 1-5pm with the brightness increasing as time goes on, no more direct sun from 5.30 onwards, all indirect, at night its under the usual HDB lights, nothing more...
Cheers
Furret
0

#4 User is offline   sthh 

  • Advanced Member
  • PipPipPip
  • Group: Members
  • Posts: 1862
  • Joined: 13-January 10
  • Gender:Male
  • Location:Sembawang

Posted 31 August 2014 - 09:05 AM

 furret, on 30 August 2014 - 11:04 PM, said:

Sorry for the late reply... anyway, it is still potted in coconut husk, as for watering , I water once every 1-3 days depends.... my neighbour also waters once in a while, as for sunlight, my place get indirect morningsun and the sun from 1-5pm with the brightness increasing as time goes on, no more direct sun from 5.30 onwards, all indirect, at night its under the usual HDB lights, nothing more...
Cheers
Furret


Sorry to tell you, but your dendrobium is rotting away, either bacterial or fungi.
You will have to try salvage the viable dendrobium pseudobulbs, and quickly repot those.
Coconut husk retain a lot of water. And the Thai vendor has a tendency to put moss with fertiliser on the roots area. This is a deadly combo, esp if you water quite regularly, and the medium do not get dry out due to the indirect sun.

You may be able to save your weaken den if you repot it with charcoal or keep them bareroot on a fernbark.
0

#5 User is offline   furret 

  • Advanced Member
  • PipPipPip
  • Group: Members
  • Posts: 427
  • Joined: 18-December 13
  • Gender:Male
  • Location:Ghim Moh

Posted 31 August 2014 - 09:36 AM

Ermm could you PM me ASAP I dont really get your meaning.....
0

#6 User is offline   nep 

  • Advanced Member
  • PipPipPip
  • Group: Members
  • Posts: 756
  • Joined: 09-September 09
  • Gender:Male
  • Location:Singapore
  • Interests:Nepenthes, Tillandsia, Myrmecophytes, Amorphophallus and anything with large foliage!

Posted 31 August 2014 - 09:56 AM

 furret, on 31 August 2014 - 09:36 AM, said:

Ermm could you PM me ASAP I dont really get your meaning.....

Basically what he is trying to say is:

1. See which psuedobulbs are still turgid.
2. If there are afew that are still a turgid and look healthy. Divide them at the base by splitting them away from the infected ones. Make sure each psuedobulb has some roots.
3. Pot the salvageable plants( psuedobulbs) in well draining media and monitor constantly.

Actually, if you could post a pic, that would be way better for the orchid 'pros' to determine the cause and provide a solution.

Thanks
0

#7 User is offline   furret 

  • Advanced Member
  • PipPipPip
  • Group: Members
  • Posts: 427
  • Joined: 18-December 13
  • Gender:Male
  • Location:Ghim Moh

Posted 31 August 2014 - 11:32 AM

Ermm is it possible ROOT orchid cuttings?
0

#8 User is offline   boonboon 

  • Associate Member
  • PipPipPip
  • Group: Moderators
  • Posts: 5385
  • Joined: 13-December 04
  • Gender:Male
  • Location:Singapore
  • Interests:Roses, Orchids, Cacti and Succulents, Gesneriads, Fragrant Plants etc

Posted 31 August 2014 - 05:50 PM

Not root like rooting cuttings but as what nep has explained, each cane when matured will grow an offshoot at its base. You can root the healthy canes as a clump and pot up with charcoal.

As a side note, it is very challenging to flower it in Singapore as they require cool temperatures to initiate bud formation.
0

#9 User is offline   furret 

  • Advanced Member
  • PipPipPip
  • Group: Members
  • Posts: 427
  • Joined: 18-December 13
  • Gender:Male
  • Location:Ghim Moh

Posted 31 August 2014 - 10:33 PM

So guys! Heres an update... hope this helps
BEFORE
http://i1273.photobucket.com/albums/y404/furret444/Mobile%20Uploads/20140831_115303_zpswms2eq11.jpg
AFTER
http://i1273.photobucket.com/albums/y404/furret444/Mobile%20Uploads/20140831_221209_zps4y9c6bct.jpg
CLOSE UP ON ROOTS AND PSEUDOBULBS( I think )
http://i1273.photobucket.com/albums/y404/furret444/Mobile%20Uploads/20140831_221225_zps2ypfforj.jpg

Thanks guys I hope this helps you to help me identify the problem and if it is able to be salvaged.... :(/>
Furrey

Unable to edit post.... Supposed to sign off as Furret opps
0

#10 User is offline   keff 

  • Advanced Member
  • PipPipPip
  • Group: Members
  • Posts: 579
  • Joined: 30-July 12
  • Gender:Male

Posted 31 August 2014 - 10:52 PM

Looks like a goner. I would dispose of it. Disinfect the pot if you intend to reuse it.
0

#11 User is offline   drektster 

  • Advanced Member
  • PipPipPip
  • Group: Members
  • Posts: 149
  • Joined: 14-February 12

Posted 31 August 2014 - 11:33 PM

 keff, on 31 August 2014 - 10:52 PM, said:

Looks like a goner. I would dispose of it. Disinfect the pot if you intend to reuse it.


cut the cane, hang it upside down and spray water everyday hopeing a keiki would develop.
0

#12 User is offline   furret 

  • Advanced Member
  • PipPipPip
  • Group: Members
  • Posts: 427
  • Joined: 18-December 13
  • Gender:Male
  • Location:Ghim Moh

Posted 01 September 2014 - 07:23 AM

Ermmm which part of the cane?
0

#13 User is offline   ATP 

  • Advanced Member
  • PipPipPip
  • Group: Members
  • Posts: 97
  • Joined: 24-October 11
  • Gender:Male
  • Location:singapore

Posted 01 September 2014 - 08:21 AM

Use a clean pair of shears and cut off dead stem. If you see healthy stem retain and put cinnamon powder. Hang upside down and maybe a keiki will sprout.

However this is bacterial rot and is infectious. Spread by splashing water. You need to isolate the sick plant. Need to disinfect your growing area with diluted bleach solution .

For more info on orchid pests and diseases you can read up www.saintaugustineorchids.com . They are affiliated to AOS.



Amendment : Site should be staugorchidsociety.org

This post has been edited by ATP: 06 September 2014 - 01:06 PM

0

#14 User is offline   furret 

  • Advanced Member
  • PipPipPip
  • Group: Members
  • Posts: 427
  • Joined: 18-December 13
  • Gender:Male
  • Location:Ghim Moh

Posted 01 September 2014 - 10:37 AM

So I just cut the stem? Put cinnamon powder on the cut and hang upside down?
0

#15 User is offline   sthh 

  • Advanced Member
  • PipPipPip
  • Group: Members
  • Posts: 1862
  • Joined: 13-January 10
  • Gender:Male
  • Location:Sembawang

Posted 01 September 2014 - 10:51 AM

 furret, on 01 September 2014 - 10:37 AM, said:

So I just cut the stem? Put cinnamon powder on the cut and hang upside down?


If you see that part of the stem is still green and firm, cut it out, hang it, don't water it. It may grow keiki from the stem.
0

#16 User is offline   furret 

  • Advanced Member
  • PipPipPip
  • Group: Members
  • Posts: 427
  • Joined: 18-December 13
  • Gender:Male
  • Location:Ghim Moh

Posted 01 September 2014 - 11:07 AM

Dont water? Wont it dry up
0

#17 User is offline   sthh 

  • Advanced Member
  • PipPipPip
  • Group: Members
  • Posts: 1862
  • Joined: 13-January 10
  • Gender:Male
  • Location:Sembawang

Posted 01 September 2014 - 11:09 AM

 furret, on 01 September 2014 - 11:07 AM, said:

Dont water? Wont it dry up


It's a natural instinct for stem under stress to try to reproduce. Watering a stem will only rot it.
If you are worried, you can put it in a ziplop bag so that the stem will not lose too much water.
0

#18 User is offline   furret 

  • Advanced Member
  • PipPipPip
  • Group: Members
  • Posts: 427
  • Joined: 18-December 13
  • Gender:Male
  • Location:Ghim Moh

Posted 01 September 2014 - 11:14 AM

So I cut, put in ziplock bag,hang with the bag... Do I still need the cover the cut with cinnamon powder?
0

#19 User is offline   sthh 

  • Advanced Member
  • PipPipPip
  • Group: Members
  • Posts: 1862
  • Joined: 13-January 10
  • Gender:Male
  • Location:Sembawang

Posted 01 September 2014 - 11:17 AM

 furret, on 01 September 2014 - 11:14 AM, said:

So I cut, put in ziplock bag,hang with the bag... Do I still need the cover the cut with cinnamon powder?


If you have cinnamon powder, you can cover the cut end with it to prevent further infection.
0

#20 User is offline   boonboon 

  • Associate Member
  • PipPipPip
  • Group: Moderators
  • Posts: 5385
  • Joined: 13-December 04
  • Gender:Male
  • Location:Singapore
  • Interests:Roses, Orchids, Cacti and Succulents, Gesneriads, Fragrant Plants etc

Posted 02 September 2014 - 08:21 AM

I personally think it is better to throw the plant away as bacterial rots will spread to the other parts of the plant which may still be green.
0

Share this topic:


  • 2 Pages +
  • 1
  • 2

1 User(s) are reading this topic
0 members, 1 guests, 0 anonymous users