Help.  Sudden Miltoniopsis Leaf Yellowing with Dark Outline
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.

Help.  Sudden Miltoniopsis Leaf Yellowing with Dark Outline
Many perks!
<...more...>


Sponsor
 

Google


Fauna Top Sites
Register Help.  Sudden Miltoniopsis Leaf Yellowing with Dark Outline Members Help.  Sudden Miltoniopsis Leaf Yellowing with Dark Outline Help.  Sudden Miltoniopsis Leaf Yellowing with Dark Outline Today's PostsHelp.  Sudden Miltoniopsis Leaf Yellowing with Dark Outline Help.  Sudden Miltoniopsis Leaf Yellowing with Dark Outline Help.  Sudden Miltoniopsis Leaf Yellowing with Dark Outline
LOG IN/REGISTER TO CLOSE THIS ADVERTISEMENT
Go Back   Orchid Board - Most Complete Orchid Forum on the web ! > >
Reply
 
Thread Tools Rating: Thread Rating: 1 votes, 5.00 average. Display Modes
  #1  
Old 07-26-2020, 10:00 PM
realoldbeachbum realoldbeachbum is offline
Senior Member
 

Join Date: Sep 2019
Zone: 7b
Location: Alabama, USA
Posts: 340
Help.  Sudden Miltoniopsis Leaf Yellowing with Dark Outline Female
Default Help. Sudden Miltoniopsis Leaf Yellowing with Dark Outline

I have had this Miltoniopsis Bert Field Crimson Glow for 4 months. It was mail order and came with almost no roots, but has thrived in low light, plenty of hydration, aeriation, and Kelp. Suddenly, on the largest leaf an elongated yellow swatch appeared from about 1/4 way up from base to about 1/4 down from tip of leaf. It does not go all the way to the base or to the tip. It has yellow center with thin dark edge. All other growths look healthy. It has had no overhead watering and is inside on grow shelf with a shop light about 3 feet up which is on about 6 hours a day.

I searched the web for pics of what it might be, but cannot find one that matches this (St Augustine has the best info!)

Do any of you have an idea as to what this might be? I have isolated the plant and plan to snip off the growth. Thanks sooo much, OB. You are my Orchid ER!!Help.  Sudden Miltoniopsis Leaf Yellowing with Dark Outline-milt-leaf-pic-1-jpg

Help.  Sudden Miltoniopsis Leaf Yellowing with Dark Outline-milt-leaf-pic-2-jpg

Help.  Sudden Miltoniopsis Leaf Yellowing with Dark Outline-milt-leaf-pic-3-jpg
Reply With Quote
  #2  
Old 07-26-2020, 10:16 PM
estación seca's Avatar
estación seca estación seca is offline
Senior Member
 

Join Date: Jun 2015
Zone: 9b
Location: Phoenix AZ - Lower Sonoran Desert
Posts: 18,654
Help.  Sudden Miltoniopsis Leaf Yellowing with Dark Outline Male
Default

My first guess would be heat damage... how close to the lights? What kind of light? These are cool-growing plants that are easy to damage when they get too hot.
__________________
May the bridges I've burned light my way.

Weather forecast for my neighborhood
Reply With Quote
  #3  
Old 07-26-2020, 11:03 PM
realoldbeachbum realoldbeachbum is offline
Senior Member
 

Join Date: Sep 2019
Zone: 7b
Location: Alabama, USA
Posts: 340
Help.  Sudden Miltoniopsis Leaf Yellowing with Dark Outline Female
Default

Quote:
Originally Posted by estación seca View Post
My first guess would be heat damage... how close to the lights? What kind of light? These are cool-growing plants that are easy to damage when they get too hot.
Thanks, ES!

The temp in the grow space does get hot and humid in this Alabama heat - high 80's to low 90's, but I have a fan running during the heat of the day. Will assume for now that heat is the problem; however would heat affect only one leaf? (No other leaves are impacted.) The light above it is a 'shop' grow light that is really far away, so no heat comes from it.

I will bring it inside the house where the AC will keep it cooler. Appreciate your expertise very much.
Reply With Quote
  #4  
Old 07-27-2020, 12:48 AM
JScott JScott is offline
Senior Member
 

Join Date: Sep 2017
Location: Grand Prairie, TX
Posts: 1,189
Help.  Sudden Miltoniopsis Leaf Yellowing with Dark Outline
Default

My first thought was also heat/sun damage. Listen to ES. He knows stuff. And sometimes heat damage appears in odd places, and you think, "how did that happen there?" but that's just how it is sometimes.

Last edited by JScott; 07-27-2020 at 12:51 AM..
Reply With Quote
  #5  
Old 07-27-2020, 01:24 AM
estación seca's Avatar
estación seca estación seca is offline
Senior Member
 

Join Date: Jun 2015
Zone: 9b
Location: Phoenix AZ - Lower Sonoran Desert
Posts: 18,654
Help.  Sudden Miltoniopsis Leaf Yellowing with Dark Outline Male
Default

Upper 80s-90s F / 30-33C and I'm surprised it doesn't look worse. That is the part of the leaf that probably faces the lights. Miltoniopsis like to be very cool, very humid, very well-watered and have very good air circulation.
__________________
May the bridges I've burned light my way.

Weather forecast for my neighborhood
Reply With Quote
  #6  
Old 07-27-2020, 11:14 AM
realoldbeachbum realoldbeachbum is offline
Senior Member
 

Join Date: Sep 2019
Zone: 7b
Location: Alabama, USA
Posts: 340
Help.  Sudden Miltoniopsis Leaf Yellowing with Dark Outline Female
Default

Quote:
Originally Posted by estación seca View Post
Upper 80s-90s F / 30-33C and I'm surprised it doesn't look worse. That is the part of the leaf that probably faces the lights. Miltoniopsis like to be very cool, very humid, very well-watered and have very good air circulation.
Thanks ES and JScott. I will do just as you say. (I am relieved that both of you did not mention virus or bacteria!!!)
Reply With Quote
  #7  
Old 07-27-2020, 04:35 PM
SouthPark SouthPark is offline
Senior Member
 

Join Date: Dec 2018
Member of:AOS
Location: Australia, North Queensland
Posts: 5,214
Default

ROBB - was this plant growing under the conditions it was growing in (under those same lights) for approximately 4 months?

If that is the case, then some consideration would need to be made about the reason for the abrupt development of that damage on that leaf there.

ES could be onto it about temperature and/or light level. If some particular hot day came up, then it could affect the plant. Not sure about why that particular leaf though.

Could also see if there's any attacking bugs.


Last edited by SouthPark; 07-27-2020 at 04:38 PM..
Reply With Quote
  #8  
Old 07-28-2020, 09:18 AM
realoldbeachbum realoldbeachbum is offline
Senior Member
 

Join Date: Sep 2019
Zone: 7b
Location: Alabama, USA
Posts: 340
Help.  Sudden Miltoniopsis Leaf Yellowing with Dark Outline Female
Default

Quote:
Originally Posted by estación seca View Post
Upper 80s-90s F / 30-33C and I'm surprised it doesn't look worse. That is the part of the leaf that probably faces the lights. Miltoniopsis like to be very cool, very humid, very well-watered and have very good air circulation.
Quote:
Originally Posted by SouthPark View Post
ROBB - was this plant growing under the conditions it was growing in (under those same lights) for approximately 4 months?

If that is the case, then some consideration would need to be made about the reason for the abrupt development of that damage on that leaf there.

ES could be onto it about temperature and/or light level. If some particular hot day came up, then it could affect the plant. Not sure about why that particular leaf though.

Could also see if there's any attacking bugs.

Hello SouthPark. Yes the plant was in same location for 4 months. No change in lights/water/humidity. The temp did rise significantly in those 4 months when Summer blazed in about 6 weeks ago! I looked for bugs, but nothing there.

I moved it to North Window in living space where we keep AC around 75 F. Only problem now is humidity. I understand Milts love humidity, which is only 40-50% in our living space. Thinking about a humidity tray with dome . . .

If another leaf becomes infected, I will use one of my expensive Agdia ImmunioStrips to test for virus. (I only use them when all else has been ruled out.)

Thanks so much for your guidance. As I said before - the OB is my Orchid ER!!! Stay Healthy.
Reply With Quote
Reply

Bookmarks

Tags
leaf, light, miltoniopsis, tip, yellow


Currently Active Users Viewing This Thread: 1 (0 members and 1 guests)
 

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
dendrobium nobile with yellowing leaf and black spots Shenzyrose Dendrobium Alliance 4 10-09-2019 01:29 AM
Suspicious dark leaf spots on several orchids. BrassavolaStars Beginner Discussion 6 09-27-2019 03:01 PM
New phalaenopsis leaf yellowing spt4261 Hybrids 7 10-03-2017 03:33 AM
Cattleya walkeriana developing dark spots and yellowing on leaves shahrezsyed Cattleya Alliance 3 08-08-2016 11:42 AM

All times are GMT -4. The time now is 09:04 PM.

© 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.