Black Spot Fungus (Phal) Contagion Risk
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.

Black Spot Fungus (Phal) Contagion Risk
Many perks!
<...more...>


Sponsor
 

Google


Fauna Top Sites
LOG IN/REGISTER TO CLOSE THIS ADVERTISEMENT
  #1  
Old 02-15-2020, 04:01 PM
aerides aerides is offline
Member
 

Join Date: Feb 2008
Posts: 42
Black Spot Fungus (Phal) Contagion Risk
Default Black Spot Fungus (Phal) Contagion Risk

Wondering if close-by plants are at risk. Is common "black spot" the correct diagnosis (Anthracnose)? Thank you.
Attached Thumbnails
Black Spot Fungus (Phal) Contagion Risk-black-spot-fungus-phal-3-jpg  
Reply With Quote
  #2  
Old 02-16-2020, 11:33 AM
aliceinwl aliceinwl is offline
Senior Member
 

Join Date: Nov 2017
Zone: 9b
Location: Central Coast of California
Posts: 908
Black Spot Fungus (Phal) Contagion Risk Female
Default

Iím not sure about risk to other plants. Some of my plants have developed this, it seems to set in when they are kept colder than they want to be for an extended period. If I catch it early and warm them up, they make a full recovery. But if I leave it too long and it gets into the stem, I usually lose the plant.

I havenít had issues with it spreading when I bring the plants into warmer areas, but I also make sure thereís no water on the leaves or physical contact.
Reply With Quote
  #3  
Old 02-16-2020, 01:26 PM
aerides aerides is offline
Member
 

Join Date: Feb 2008
Posts: 42
Black Spot Fungus (Phal) Contagion Risk
Default

Thank you. Your answer makes sense. The plant in question is (I think) a "Dori." I guess I was mistaken that Doritanopsis tolerate lower night temps than straight phals. I should have checked. I've been allowing that room to drop to 55 at night because it's mostly paphs and miltoniopsis in there. Although there is significant dark discoloration in the leaves, it seems to be inside the leaves - no lesions on the surface, upper or lower. True of your plants as well? I've also noticed that spike development is quite slow. This must be it. Easy fix. Thanks again.
Reply With Quote
  #4  
Old 02-16-2020, 04:07 PM
aliceinwl aliceinwl is offline
Senior Member
 

Join Date: Nov 2017
Zone: 9b
Location: Central Coast of California
Posts: 908
Black Spot Fungus (Phal) Contagion Risk Female
Default

I have mostly NOID complex hybrids. I have a bunch that I acquire in the summer and end up keeping outside. When nights start getting into the 40s and days donít get warmer than the 60s some start getting this type of damage. If I bring them in the house (70s), the progression stops although the affected leaves stay ďuglyĒ.

I have lost a few indoor Phalaenopsis on windowsills and I suspect that even 60s were too low for them so I try to stay away from hybrids with a lot of ďhotĒ growers in their background if Iím buying IDíd plants.
Reply With Quote
Reply

Bookmarks

Tags
black, common, correct, risk, spot


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
The S/H list ScottMcC Semi-Hydroponic Culture 34 03-15-2020 07:48 PM
Phal Germinating Seeds turning Black DozerDC Propagation 7 10-12-2017 04:11 PM
New Phal for the home (black spot) milan360 Beginner Discussion 11 01-18-2016 06:48 PM
Yikes! The Black Spot! Another Oncidium Highland Fashionista Beginner Discussion 13 11-30-2014 10:07 PM
Phal with black spot in crown suzannabanana Pests & Diseases 2 11-21-2012 05:00 PM

All times are GMT -4. The time now is 04:37 AM.

© 2007 OrchidBoard.com
Search Engine Optimisation provided by DragonByte SEO v2.0.37 (Lite) - vBulletin Mods & Addons Copyright © 2020 DragonByte Technologies Ltd.
Feedback Buttons provided by Advanced Post Thanks / Like (Lite) - vBulletin Mods & Addons Copyright © 2020 DragonByte Technologies Ltd.

Clubs vBulletin Plugins by Drive Thru Online, Inc.