Angraecum diderii sudden demise
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.

Angraecum diderii sudden demise
Many perks!
<...more...>


Sponsor
 

Google


Fauna Top Sites
LOG IN/REGISTER TO CLOSE THIS ADVERTISEMENT
  #1  
Old 08-16-2024, 12:29 PM
Dusty Ol' Man's Avatar
Dusty Ol' Man Dusty Ol' Man is offline
Senior Member
 

Join Date: Oct 2020
Zone: 9b
Location: Lake Charles, Louisiana
Age: 70
Posts: 1,471
Default Angraecum diderii sudden demise

All seemed to be going well with this plant. Putting out new leaves and roots, as it should. Then, lo and behold, a spike with bud! But the bud got trapped by the bark texture (mounted on cork). Carefully tried to free it up to no avail. The flower attempted to open but didn't quite make it. Then the flower died. Then the leaves started turning black and falling from the stem. Within a week everything was gone. Just some green root tips left. I have no idea what went wrong. The conditions had not changed since I received the plant in October. Same temps/humidity/photo period/light level. And the watering schedule was a daily soak with a spray bottle and bi-weekly dunk for about 20 minutes, every other time with 100ppm nitrogen ferts. Rainwater with Klite rainwater formula.

Anyone have any ideas? I have been over the habitat norms for the species and my conditions were right in the middle. I'm lost on this one.
Reply With Quote
  #2  
Old 08-19-2024, 05:22 PM
Dusty Ol' Man's Avatar
Dusty Ol' Man Dusty Ol' Man is offline
Senior Member
 

Join Date: Oct 2020
Zone: 9b
Location: Lake Charles, Louisiana
Age: 70
Posts: 1,471
Default

No one?
Reply With Quote
  #3  
Old 08-19-2024, 06:04 PM
Waterdog111's Avatar
Waterdog111 Waterdog111 is offline
Senior Member
 

Join Date: May 2024
Member of:AOS
Location: Gulf Coast
Age: 75
Posts: 218
Angraecum diderii sudden demise Male
Default

From my very short range of experience, I have lost more in the vanda family than any others. Im thinking they are touchy . That is why I started buying several varieties to get more comfortable with them.
__________________
W.D.111
Tiny house dweller
Reply With Quote
  #4  
Old 08-20-2024, 03:21 AM
Leafmite's Avatar
Leafmite Leafmite is offline
Senior Member
 

Join Date: Sep 2010
Zone: 5b
Location: Ohio
Posts: 10,931
Angraecum diderii sudden demise
Default

Angraecums are very prone to systemic fungus issues as they come from the breezy island of Madagascar and just do not seem to have developed the greatest resistance to fungus issues. Some growers treat Angraecums proactively with a fungicide to avoid these issues but Calcium works just as well. Once they begin dropping leaves, it is difficult to save them.

I go the Calcium route for my Angraecums. My tap water has quite a bit of Calcium so I use that and also usually add extra...because, yeah, Angraecums.

The only other thing that it could be is too much/too strong fertilizer. Flushing immediately can often save the plant in that case.
__________________
I decorate in green!
Reply With Quote
Post Thanks / Like - 1 Likes
Likes Dusty Ol' Man liked this post
  #5  
Old 08-20-2024, 07:55 AM
Dalachin Dalachin is offline
Senior Member
 

Join Date: Jul 2022
Zone: 5a
Location: Ithaca, ny
Posts: 525
Angraecum diderii sudden demise Female
Default

That is tragic, I’m so sorry it happened! I keep my diderii in very similar conditions, also mounted on cork with daily spraying (although I don’t do a weekly dunk). I’ve also had buds get trapped and have tried with various success rates to extricate them. Mine is a very vigorous rooter, it even tries to colonize nearby mounts. I got it from Peter t Lin in June 2023.

I’m located in central ny and grow on tented shelves, so my conditions are probably different from yours in some respects. I bet you have higher natural humidity- the tenting and misting I do is an attempt to create humidity, but my plants probably do experience my drier climate despite my efforts.

Calcium is an interesting suggestion. I don’t specifically supplement with calcium, but I use 25 ppm k-lite in RO in my daily watering routine, which has calcium. I also have lots of fans in my setup to keep the air moving. My sesquipedales sit right in front if fans.

I’ve been silent since I don’t have any direct experience with an issue like this. In my reading on angraecums, it seems that they are known for fungal issues, and some growers report regular use of fungicides. Since I haven’t had a problem I haven’t gone down that rabbit hole.
__________________
On Instagram @unlikelyorchid

Orchid Photography and Art

Unlikely Orchid Website
Reply With Quote
Post Thanks / Like - 1 Likes
Likes Dusty Ol' Man liked this post
  #6  
Old 08-20-2024, 10:39 AM
NatalieS's Avatar
NatalieS NatalieS is offline
Senior Member
 

Join Date: Dec 2011
Posts: 731
Angraecum diderii sudden demise Female
Default

Any chance sudden demise could've been from accidental miss-labelling or miss-ID? Like perhaps being mistaken for cool-grower rutenbergianum?

Just a wild suggestion on my part, but if a fungal issue seems unlikely, if it was miss-labelled and it's a cool grower, it could have spent itself perhaps?
Reply With Quote
  #7  
Old 08-20-2024, 10:47 AM
Dusty Ol' Man's Avatar
Dusty Ol' Man Dusty Ol' Man is offline
Senior Member
 

Join Date: Oct 2020
Zone: 9b
Location: Lake Charles, Louisiana
Age: 70
Posts: 1,471
Default

Quote:
Originally Posted by NatalieS View Post
Any chance sudden demise could've been from accidental miss-labelling or miss-ID? Like perhaps being mistaken for cool-grower rutenbergianum?

Just a wild suggestion on my part, but if a fungal issue seems unlikely, if it was miss-labelled and it's a cool grower, it could have spent itself perhaps?
I don't believe so. This was purchased from Hausermann. They are pretty good with their species plants.
Reply With Quote
  #8  
Old 08-20-2024, 02:31 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: 18,483
Angraecum diderii sudden demise Male
Default

I haven't grown this species. My general approach is to recognize plants in habitat are highly resistant to pathogens, otherwise they would go extinct.

I also know of many species of plants, from many families, that were considered almost impossible to grow until various things were learned about their requirements.

Blackening of leaves does not always mean fungal attack. Blackening leaves develop on Cattleyas when they get sunburn, when new shoots don't get enough water, and when new shoots don't get enough calcium. Other Angraecums I've grown had leaves turn black when they were falling off due to age.

I'm not convinced your plant had a fungal attack, especially since you haven't reported seeing fuzzy hyphae, nor fruiting bodies forming on the leaves. Treating prophylactically with fungicide is not a remedy for something lacking in the growing conditions, even moreso if you aren't sure you have a fungal problem. If plants are considered to routinely develop fungal issues, that means to me we haven't figured out what they want in terms of growing conditions, because healthy plants aren't much susceptible to fungus when conditions are good.

I haven't seen this plant in habitat. I would want to know how often it dries out completely during the growing season, both roots and vegetative parts. I would want to know how much direct sun it gets, if any. I would want to know how humid it is in the growing season.

I would call Hausermann's and talk to their growers. They are very happy to talk at length to customers about how they grow plants.
__________________
May the bridges I've burned light my way.

Weather forecast for my neighborhood
Reply With Quote
Post Thanks / Like - 2 Likes
Likes Waterdog111, NatalieS liked this post
Reply

Bookmarks

Tags
bud, conditions, flower, plant, rainwater


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
Angraecum diderii Dusty Ol' Man Orchids in Bloom 1 07-26-2024 03:26 PM
Newest mount - Angraecum diderii Dusty Ol' Man Growing on Mounts 5 05-29-2024 03:13 PM
Angraecum Wishlist BrassavolaStars Orchid Lounge 12 11-23-2021 02:54 AM
Angraecum diderii, Looking for info on them *MINI* Tindomul Vanda Alliance - Angraecum/Aerangis 21 05-02-2015 10:17 PM
Angraecum eburneum Luis Renato Vanda Alliance - Angraecum/Aerangis 9 10-31-2013 11:02 AM

All times are GMT -4. The time now is 12:00 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.