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  #1  
Old 11-22-2019, 10:17 PM
Jenn4a Jenn4a is offline
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Angraecum? Black leaves falling off Female
Default Angraecum? Black leaves falling off

Iím not sure whatís wrong with this guy.
I water it every week or every other week and let the water sit in the tray. The room which it was in typically is hot and dry because I use T5HO. I moved my angraecums downstairs near some led lights for now, where itís much cooler.
Iíve sprayed it with physan a month or so, but the leaves keep turning black and falling off. There is good circulation, from a swiveling fan.
Iíve also put in some rootblast fertilizer a week ago.

I avoid getting the leaves wet otherwise. Both my angraecums have dropped leaves, but currently the other one doesnít have any black leaves. Itís just in need of some soaking because itís dry.


I leave my orchids at my house, and I live on campus. I make weekly visits usually. My phals and paphs seem happy. Itís just these guys!
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  #2  
Old 11-23-2019, 10:33 PM
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Leafmite Leafmite is offline
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Angraecum? Black leaves falling off
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Which one is this?

Angraecums are famous for 'fungus' issues. They are both sensitive to fertilizer salts and many of them come from Madagascar which is very breezy. In addition, Madagascar has many different climates ranging from constantly hot (lowlands) to cooler temperatures during the winter (higher elevations) so it is important to know the identity before giving specific advice.

I make certain that mine have a constant source (or two or three) of Calcium (Calcium strengthens the cells and helps prevent fungus infections). I added limestone, oyster shell and egg shell to the pots of all of mine. I water with distilled water or rain water and use Osmocote (sp?) which is a slow-release fertilizer that won't burn the roots. I have mine growing in red lava rock/limestone and basket pots so the roots get plenty of airflow around them (mine are descended from ones that come from breezy Madagascar). I hope this helps.

Here is a pretty good source of information:

Angraecums...

The blog is written by someone who lives in Florida so his advice needs to be taken into context for those of us who live in colder climates.
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  #3  
Old 11-24-2019, 08:41 AM
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Dollythehun Dollythehun is offline
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Angraecum? Black leaves falling off Female
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Ditto Leafmite. I'll add mho. That medium looks broken down and the plant looks underwatered. I lost mine to disease, probably due to underwatering stress. I can't think of one orchid I own that could thrive on a weekly/biweekly watering.
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  #4  
Old 11-25-2019, 03:29 AM
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SouthPark SouthPark is offline
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If it's a case of fertiliser toxicity ----- ie. too much fertiliser accumulated in the growing media, then try repotting in new media - right away.

I am just assuming the issue isn't sunburn. But it appears that the yellowing is one-sided. On one side of the plant only.

Also assuming it's not fungal activity...... but not discounting it.

Agreeing with leafmite and dolly - totally.

---------- Post added at 05:29 PM ---------- Previous post was at 05:13 PM ----------

Quote:
Originally Posted by Jenn4a View Post
I water it every week or every other week and let the water sit in the tray.
Do you have a little separator that keeps the bottom of the orchid pot from touching the tray?

See this : click here.

Also - maybe once a week watering is not enough, which could be the reason for the leaf shapes seen too. Using a airy media with good air-movement in the room can allow you to water maybe every couple of days, or even every day (if you wanted).

Last edited by SouthPark; 11-25-2019 at 03:32 AM..
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