Fluffy white substance on bark plus tiny grey bugs
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.

Fluffy white substance on bark plus tiny grey bugs
Many perks!
<...more...>


Sponsor
 

Google


Fauna Top Sites
LOG IN/REGISTER TO CLOSE THIS ADVERTISEMENT
  #1  
Old 07-30-2021, 10:17 AM
tjselwyn tjselwyn is offline
Jr. Member
 

Join Date: Mar 2021
Posts: 13
Fluffy white substance on bark plus tiny grey bugs
Default Fluffy white substance on bark plus tiny grey bugs

In the last couple of days I've found a double-trouble issue with two of my orchids, a dendrobium and a mini phal: a combination of a fluffy white substance on the bark and the presence of tiny grey mites. I've done a lot of searching and can't find anything about these two things being present together - I've assumed they're related but could be coincidental.

Both of these orchids have been repotted, the dendrobium back in April and the phal a week or so ago. The dendrobium also had bush snails, which weren't present in the phal, and I panicked a bit and ended up binning it (it had a mushy bark plug stuck right in the middle of the roots that I couldn't get out, and I imagine that's where some of the bugs are coming from). I'd really like to save the phal if I can, though - the attached photos are from its medium.

The fluffy white stuff was only in the bark, not actually on the roots or any part of the plant above the surface. The mites are tiny, grey, elongated, have antennae, and they move pretty quickly (they don't look like any pictures of mealybugs that I've found). I couldn't get a good photo of those, but I've attached what I could and also arrowed one in the picture of the pot.

Also, the black bits on the roots weren't there when I repotted very recently.

For now, I've taken the phal out of its pot and sprayed liberally with 3% hydrogen peroxide. A couple more bugs have since come out of the very centre of the root ball. I've also cut away the blackened roots.

Incidentally, this phal lost a major leaf a few weeks ago, which turned yellow and fell off. I'd assumed it was because of too much light/sunburn, but now I wonder whether it was caused by any of this stuff.

Any suggestions on what these things are? My priority is of course trying to make sure none of my other orchids get infested.
Attached Thumbnails
Fluffy white substance on bark plus tiny grey bugs-1-jpg   Fluffy white substance on bark plus tiny grey bugs-2-jpg   Fluffy white substance on bark plus tiny grey bugs-3-jpg   Fluffy white substance on bark plus tiny grey bugs-4-jpg  
Reply With Quote
  #2  
Old 07-30-2021, 12:10 PM
rbarata rbarata is offline
Senior Member
 

Join Date: Mar 2015
Zone: 10a
Location: Abrantes
Posts: 4,717
Fluffy white substance on bark plus tiny grey bugs Male
Default

I can't see clearly in the phtos but the fluffy substance, in my oppinion, it is not directly related with the mites. The fluffy substance can be fungus and/or fertilizer deposits.

Hydrogen Peroxide and orchids don't mix very well, especially on the roots. It will kill them.

An insecticide suitable for orchids might be a better choice.
__________________
Meteo data at my city here.
Reply With Quote
Post Thanks / Like - 2 Likes
Likes WaterWitchin, tjselwyn liked this post
  #3  
Old 07-30-2021, 12:20 PM
tjselwyn tjselwyn is offline
Jr. Member
 

Join Date: Mar 2021
Posts: 13
Fluffy white substance on bark plus tiny grey bugs
Default

Thanks for your reply. I did fertilize it when I repotted it, so hopefully that's it - I'll look into fungus as well.

Yes, I've realised since posting that hydrogen peroxide is a very divisive subject. I'll investigate alternatives.
Reply With Quote
  #4  
Old 07-30-2021, 02:11 PM
estación seca's Avatar
estación seca estación seca is offline
Senior Member
Fluffy white substance on bark plus tiny grey bugs
 

Join Date: Jun 2015
Zone: 9b
Location: Phoenix AZ - Lower Sonoran Desert
Posts: 13,851
Fluffy white substance on bark plus tiny grey bugs Male
Default

The white stuff is probably mold growing on the bark. Fungus that live on dead plant matter don't usually attack live plants. I ignore it in my plants.

Bush snails can be killed with coffee. I would not throw away a plant solely because of bush snails. They are likely in all your other plants. Use the Search via the top maroon menu on "coffee."

Tiny bugs in the medium rarely cause problems for plants. I would ignore them unless you see root damage that looks like chewing. The root mass is an ecosystem with lots of normal residents we don't normally see.

Plantlets are often started in plugs of foam. They grow away from and out of the foam. That plug rarely causes problems, and meticulously removing it often causes root damage. I don't think it's a good idea to be aggressive in removing old potting media.

I think the best approach to growing orchids is to focus on providing proper light, water, temperature, humidity and air at the roots, and not worry much about other factors.
__________________
May the bridges I've burned light my way.

Weather forecast for my neighborhood
Reply With Quote
Post Thanks / Like - 1 Likes
Likes tjselwyn liked this post
  #5  
Old 07-30-2021, 02:25 PM
tjselwyn tjselwyn is offline
Jr. Member
 

Join Date: Mar 2021
Posts: 13
Fluffy white substance on bark plus tiny grey bugs
Default

Thanks, ES. Yes, the more I trawl through pictures and videos, the more convinced I am that the white stuff is snow mold. Most sites advise taking action against it, though: repotting and a course of something like Physan is what I'm reading. But would you suggest at least leaving it for a while to see how bad it gets?

I do regret the panic over the bush snails...I think it was those on top of the mites that took it over the edge. And I'm glad to hear you wouldn't stress about the bugs; I should probably also be encouraged by the fact that they don't resemble any of the commonly known ones that people advise dealing with.

Great to know about the plugs as well - I'd assumed clearing that out when repotting was ideal. I've never been overzealous about it, only doing what I can without damaging the roots, but I'll not get bothered about that in the future.
Reply With Quote
  #6  
Old 07-30-2021, 02:47 PM
estación seca's Avatar
estación seca estación seca is offline
Senior Member
Fluffy white substance on bark plus tiny grey bugs
 

Join Date: Jun 2015
Zone: 9b
Location: Phoenix AZ - Lower Sonoran Desert
Posts: 13,851
Fluffy white substance on bark plus tiny grey bugs Male
Default

I don't worry about the mold. I think that kind of mold is more prevalent at lower temperatures. I only see it on medium in my house, not in my warmer sunroom.
__________________
May the bridges I've burned light my way.

Weather forecast for my neighborhood
Reply With Quote
Post Thanks / Like - 1 Likes
Likes tjselwyn liked this post
  #7  
Old 07-30-2021, 02:54 PM
tjselwyn tjselwyn is offline
Jr. Member
 

Join Date: Mar 2021
Posts: 13
Fluffy white substance on bark plus tiny grey bugs
Default

OK, that's a relief. You've made me feel a lot better about it!
Reply With Quote
Reply

Bookmarks

Tags
bark, fluffy, orchids, phal, roots


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
Tiny White Creatures in Potting Bark ablythe Pests & Diseases 3 01-06-2021 06:13 AM
Wils. starry night - brown spots, white bugs - Beginner BerryStarryNight Pests & Diseases 11 04-12-2014 05:07 PM
Yet another thread on tiny black bugs ALToronto Pests & Diseases 4 10-22-2013 02:20 PM
Worms and tiny centipede(?) like bugs in orchid bark mix alligator1 Pests & Diseases 18 07-12-2008 01:12 PM
little white bugs on my cymbidium. HELP! Singingirl96 Pests & Diseases 1 01-23-2008 03:34 PM

All times are GMT -4. The time now is 11:23 PM.

© 2007 OrchidBoard.com
Search Engine Optimisation provided by DragonByte SEO v2.0.37 (Lite) - vBulletin Mods & Addons Copyright © 2021 DragonByte Technologies Ltd.
Feedback Buttons provided by Advanced Post Thanks / Like (Lite) - vBulletin Mods & Addons Copyright © 2021 DragonByte Technologies Ltd.

Clubs vBulletin Plugins by Drive Thru Online, Inc.