Dendrobium Royal chip with black spots on 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.

Dendrobium Royal chip with black spots on leaves
Many perks!
<...more...>


Sponsor
 

Google


Fauna Top Sites
LOG IN/REGISTER TO CLOSE THIS ADVERTISEMENT
  #1  
Old 11-16-2022, 12:44 PM
marla468 marla468 is offline
Jr. Member
 

Join Date: Jan 2021
Posts: 6
Dendrobium Royal chip with black spots on leaves
Unhappy Dendrobium Royal chip with black spots on leaves

I am fairly new at caring for orchids and my beloved Dendrobium is not doing well. Please let me know if the spots are something I should worry about, should I spray with fungicide? Which one is best for this type of problem? Do I need to remove infected leaves? If so I might have to cut them all! Some new growth looks promising! Thank you all for your help.
Attached Thumbnails
Dendrobium Royal chip with black spots on leaves-9a919f92-f999-4f61-be96-237a640561ff-jpg   Dendrobium Royal chip with black spots on leaves-65a11c1f-75a3-464c-95af-583e2ee3579e-jpg   Dendrobium Royal chip with black spots on leaves-85b0d838-17e7-4677-9984-e19ef5d6fd2e-jpg   Dendrobium Royal chip with black spots on leaves-b130b6ac-2191-470d-862c-b6df71ddb661-jpg   Dendrobium Royal chip with black spots on leaves-d8dc3b0a-c183-4ed2-9534-52bdeb4f5249-jpg  

Reply With Quote
  #2  
Old 11-16-2022, 01:21 PM
dbarron dbarron is offline
Senior Member
 

Join Date: Feb 2015
Zone: 7a
Location: Arkansas
Posts: 541
Dendrobium Royal chip with black spots on leaves Male
Default

Don't do anything drastic until you know what you're dealing with (that includes spraying anything or cutting anything).
I am not at all certain, but I lean toward sunburn and possibly mechanical injury. It also looks like the canes are wrinkled, which would indicate it's gone through some dehydration.
Reply With Quote
  #3  
Old 11-16-2022, 02:09 PM
Dimples Dimples is offline
Senior Member
 

Join Date: Jan 2022
Zone: 9b
Location: San Diego
Posts: 527
Dendrobium Royal chip with black spots on leaves
Default

I don't grow those, but what have your temperatures been like? How much light does it get?
Reply With Quote
  #4  
Old 11-16-2022, 02:52 PM
dbarron dbarron is offline
Senior Member
 

Join Date: Feb 2015
Zone: 7a
Location: Arkansas
Posts: 541
Dendrobium Royal chip with black spots on leaves Male
Default

Whoops...got stuck by replying to wrong message (ignore this one)..can't find a way to delete it
Reply With Quote
  #5  
Old 11-16-2022, 04:14 PM
estación seca's Avatar
estación seca estación seca is offline
Senior Member
Dendrobium Royal chip with black spots on leaves
 

Join Date: Jun 2015
Zone: 9b
Location: Phoenix AZ - Lower Sonoran Desert
Posts: 16,264
Dendrobium Royal chip with black spots on leaves Male
Default

I agree not to cut off anything. I see a lot of scrapes and scratches, which are of no concern. But the leaf with dark banding makes me wonder whether you have spider mites. They readily attack thin-leafed orchids. Do a little reading here on spider mites.
__________________
May the bridges I've burned light my way.

Weather forecast for my neighborhood
Reply With Quote
Post Thanks / Like - 1 Likes
Likes marla468 liked this post
  #6  
Old 11-16-2022, 04:50 PM
marla468 marla468 is offline
Jr. Member
 

Join Date: Jan 2021
Posts: 6
Dendrobium Royal chip with black spots on leaves
Default

Thank you for the replies! My dendrobium is outdoors, I am in South Florida where it is very hot and it has rained very little this summer. It is usually under an oak tree, I have moved it to isolate it from my other orchids, it now has a bit more sun exposure.

Will not do anything to it for now besides cleaning it with soapy water and see if anybody has a clue of what else it could be. Thanks again!
Reply With Quote
  #7  
Old 11-16-2022, 06:13 PM
Roberta's Avatar
Roberta Roberta is online now
Super Moderator
 

Join Date: Jun 2008
Zone: 10a
Location: Coastal southern California, USA
Posts: 10,577
Dendrobium Royal chip with black spots on leaves Female
Default

The last photo looks like a bit of sunburn. (It may get darker with time... sun damage can develop slowly) The dry leaf tip would be consistent with dehydration. There does look like some mechanical damage - bumps and scrapes. Bush snails can do that too... they are too little to take actual bites, they can scrape tissue from the surface of leaves. For now, I think reduce sun somewhat, water more frequently. Unless you have spider mites (which can be controlled with soapy water if applied every 5 days or so for several weeks) I don't see anything that would spread to other plants. The damaged leaves won't "heal" but won't hurt anything either. Don't cut - I don't see anything fungal. You'll get clean new growth in the spring.

The second photo also shows medium that looks a bit old. When was it last repotted? If it has been more than 2 years, I'd also suggest repotting in the spring when you get new growth. (But not until then) At that point, if you rinse the roots well before repotting, you'll also take care of any bush snail issues that might be there. (Bad roots due to broken down medium can also cause dehydration)
__________________
"Extraordinary claims require extraordinary evidence" Carl Sagan

Roberta's Orchids (Visit my back yard)

See what orchid species are blooming in Southern California(New page for February 2023)

Last edited by Roberta; 11-16-2022 at 06:16 PM..
Reply With Quote
Post Thanks / Like - 3 Likes
Likes dbarron, marla468, Clawhammer liked this post
  #8  
Old 11-19-2022, 09:18 AM
marla468 marla468 is offline
Jr. Member
 

Join Date: Jan 2021
Posts: 6
Dendrobium Royal chip with black spots on leaves
Default

Thank you Roberta! Yes I was going to change pots now, will wait until spring!
Reply With Quote
  #9  
Old 11-19-2022, 01:43 PM
estación seca's Avatar
estación seca estación seca is offline
Senior Member
Dendrobium Royal chip with black spots on leaves
 

Join Date: Jun 2015
Zone: 9b
Location: Phoenix AZ - Lower Sonoran Desert
Posts: 16,264
Dendrobium Royal chip with black spots on leaves Male
Default

There are lots of fungal issues growing outdoors in Florida. I suggest joining a nearby orchid society.
__________________
May the bridges I've burned light my way.

Weather forecast for my neighborhood
Reply With Quote
  #10  
Old 11-30-2022, 03:45 AM
Ben_in_North_FLA's Avatar
Ben_in_North_FLA Ben_in_North_FLA is offline
Senior Member
 

Join Date: Mar 2017
Zone: 9a
Posts: 261
Dendrobium Royal chip with black spots on leaves Male
Default

All great advice above on this latouria den. I would not be so concerned about foliage but more so on media as it seems kinda worn and soft. The black leaf tip may be calcium deficiency. As you grow this outdoors I would suggest switching to a net pot and using coarse media to allow roots to dry tween waterings. I have recently bought a few latouria dens and they love the net pots. Will post a few more details with pics in the morning
__________________
So..... how you doin?
Reply With Quote
Reply

Bookmarks

Tags
dendrobium, infected, leaves, remove, spots


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
Sticky White Film and a Few Tiny Black Spots - Dendrobium HiOrcDen Beginner Discussion 1 05-01-2022 01:14 PM
Black spots on my Aerangis articulata leaves JonathanX Vanda Alliance - Angraecum/Aerangis 7 07-08-2020 12:04 PM
Phalaenopsis with yellow leaves and black spots - is it dying? Orchidelle Pests & Diseases 2 10-02-2016 01:13 PM
Black Spots Underneath Phal Leaves Kearneyweard Pests & Diseases 4 07-22-2016 12:42 PM
Dendrobium Cruetum leaves turning yellow with black spots csmcguire81 Pests & Diseases 4 08-02-2011 01:15 PM

All times are GMT -4. The time now is 09:30 PM.

© 2007 OrchidBoard.com
Search Engine Optimisation provided by DragonByte SEO v2.0.37 (Lite) - vBulletin Mods & Addons Copyright © 2023 DragonByte Technologies Ltd.
Feedback Buttons provided by Advanced Post Thanks / Like (Lite) - vBulletin Mods & Addons Copyright © 2023 DragonByte Technologies Ltd.

Clubs vBulletin Plugins by Drive Thru Online, Inc.