Small yellow & black spots on oncidium leaves
Login
User Name
Password   


Registration is FREE. Click to become a member of OrchidBoard community
(You're NOT logged in)

menu menu

Sponsor
Donate Now
and become
Forum Supporter.

Small yellow & black spots on oncidium leaves
Many perks!
<...more...>


Sponsor
 

Google


Fauna Top Sites
LOG IN/REGISTER TO CLOSE THIS ADVERTISEMENT
  #1  
Old 04-10-2015, 08:26 PM
butterfly_muse butterfly_muse is offline
Senior Member
 

Join Date: Mar 2013
Zone: 7a
Location: Maryland
Posts: 833
Small yellow &amp; black spots on oncidium leaves Female
Default Small yellow & black spots on oncidium leaves

Hi everyone!

I was watering all of my orchids today and I noticed some tiny yellow and black spots on my onc. twinkle 'pink profusion.' I have tried to research it, but I can't decide whether it's a fungal thing or maybe a virus? The spots are on some, but not all of the leaves, which leaves me extra stumped. =\ I'm not sure how to tell the difference between a virus or a fungal issue. This just came up out of nowhere, and I don't know why. I have attached pictures (sorry if they are not so great, took them with my phone). Also, pardon the condition of the plant's many cut leaves, my cat decided to chew on it over Christmas break and I had to cut a lot of the chewed pieces. >.<

I also noticed on my Onc. 'Sharry Baby' that there was a brown spot, almost like a blister, on one of the leaves. The area around the "blister" is yellow, where the rest of the leaf is green. I recently got this orchid off eBay and it came to me clean and just fine. After a few days I noticed that there were brown spots on the ends of the leaves, which I trimmed and dabbed with cinnamon (I thought that they were perhaps because the orchid had been boxed up for a while - it got sent to an old address of mine and I had to track it down at the post office so it took an extra few days to receive). This, though, is a blister looking spot where the ones I trimmed were sunken. It looks to have some small black spots on one of the leaves as well as the brown blistery type thing. I wiped its leaves down with alcohol and the paper towel turned red? Not sure what that was about.

I have isolated them from not only each other but all my other plants until I figure this out. Can someone please help me identify what these issues are and how to remedy them? The pictures attached are the twinkle first, and then the sharry baby. Thanks!
Attached Thumbnails
Small yellow &amp; black spots on oncidium leaves-img_20150410_192014512-jpg   Small yellow &amp; black spots on oncidium leaves-img_20150410_192113440-jpg   Small yellow &amp; black spots on oncidium leaves-img_20150410_191911346-jpg   Small yellow &amp; black spots on oncidium leaves-img_20150410_192327696-jpg   Small yellow &amp; black spots on oncidium leaves-img_20150410_192439297-jpg  

Small yellow &amp; black spots on oncidium leaves-img_20150410_192358231-jpg   Small yellow &amp; black spots on oncidium leaves-img_20150410_192823608-jpg  

Last edited by butterfly_muse; 04-10-2015 at 08:32 PM..
Reply With Quote
  #2  
Old 04-11-2015, 08:34 AM
Ray's Avatar
Ray Ray is offline
Senior Member
 

Join Date: May 2005
Member of:AOS
Location: Oak Island NC
Posts: 14,782
Small yellow &amp; black spots on oncidium leaves Male
Default

Hard to accurately ID from photos, but I'd bet it's an infection resulting from water droplets sitting on leaves.


Ray Barkalow
firstrays.com
__________________
Ray Barkalow, Orchid Iconoclast
FIRSTRAYS.COM
Try Kelpak - you won't be sorry!
Reply With Quote
  #3  
Old 04-11-2015, 08:46 AM
MattWoelfsen MattWoelfsen is offline
Senior Member
 

Join Date: Apr 2013
Zone: 5a
Member of:TROS, AOS, FSA
Location: Fort Wayne, Indiana
Posts: 2,727
Default Small yellow & black spots on oncidium leaves

Agree with Ray. Try to remember what this looks like for future plants. While I did not intentionally do this to my Oncidium....I had beautiful unblemished leaves. But I was in a hurry and let water remain on the leaves. The sun came out and caused the water drops become light prisms and it burned the leaves.

Another water related problem I've encountered is cold water drops remaining on the leaves and caused blisters.

The preventative behavior is when you water, water should be luke warm, dry off any moisture on leaves and run an oscillating fan to dry the plant quickly.

Also recommend you do not cut the leaves, just let them remain, as the more leaf surface you keep green the stronger the plant.

Last edited by MattWoelfsen; 04-11-2015 at 08:53 AM..
Reply With Quote
Reply

Bookmarks

Tags
black, brown, oncidium, spots, yellow


Currently Active Users Viewing This Thread: 1 (0 members and 1 guests)
 
Thread Tools
Display Modes Rate This Thread
Rate This Thread:

Posting Rules
You may not post new threads
You may not post replies
You may not post attachments
You may not edit your posts

BB code is On
Smilies are On
[IMG] code is On
HTML code is Off


Similar Threads
Thread Thread Starter Forum Replies Last Post
Brown to black spots oncidium leaves txboi25 Pests & Diseases 3 03-19-2014 09:56 PM
Black spots on Oncidium Sharry Baby leaves awakedude985 Beginner Discussion 7 02-26-2014 03:56 PM
Phal + Semi-Hydro + Black Spots Underside of Leaves + Problem empiref Pests & Diseases 2 01-11-2014 02:39 AM
Spreading black spots oncidium leaves Sahlabiya Pests & Diseases 2 07-18-2013 07:54 PM
Dendrobium Cruetum leaves turning yellow with black spots csmcguire81 Beginner Discussion 7 07-31-2011 01:41 PM

All times are GMT -4. The time now is 04:52 AM.

© 2007 OrchidBoard.com
Search Engine Optimisation provided by DragonByte SEO v2.0.37 (Lite) - vBulletin Mods & Addons Copyright © 2024 DragonByte Technologies Ltd.
Feedback Buttons provided by Advanced Post Thanks / Like (Lite) - vBulletin Mods & Addons Copyright © 2024 DragonByte Technologies Ltd.

Clubs vBulletin Plugins by Drive Thru Online, Inc.