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Old 07-08-2013, 01:17 PM
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Is it terminal?

Hi there, newbie here.

One of my orchids had crown rot (I think). Two of the three leaves fell off with no real warning, just slight yellowing where they joined the plant. On inspection they both had what looked like mould mycelium, with more in small patches on the crown.

I moved it to a dark corner of the room, witheld water and treated with 3% H2O2 once every 3 days until it no longer "fizzed", but noticed the crown looked dry and woody even before the first application. Now the 5 blooms have dropped and the end of the spike is dead, as well as the spike where it is attached has also gone woody looking.

I have only had this orchid for about 6 weeks, and the leaves dropped after about a fortnight.

Do you think it was crown rot, and is it terminal?

Many thanks.
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Old 07-08-2013, 01:23 PM
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Forgot to add - it's a NOID phalaenopsis.
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Old 07-08-2013, 02:23 PM
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Pictures would help us come to a real conclusion, but it does sound like crown rot. In cases of crown rot, you can sometimes hope for a basal keiki to sprout.
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Old 07-08-2013, 03:26 PM
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Apparently I can only post URLs when I've made 5 posts or more...
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Old 07-08-2013, 03:26 PM
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So apologies for this!
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Old 07-08-2013, 03:27 PM
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But my next post will contain a picture.
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Old 07-08-2013, 03:33 PM
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I didn't think to take pictures when the leaves first fell off, but this picture (if I've done this right!) shows the phal in its current state.



I can't tell if that picture can be zoomed, so this is the link to the file:
Crown Rot? - Orchid Picture Gallery
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Old 07-08-2013, 04:25 PM
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Looks like you still have at least one viable root along with a remaining leaf. I wouldn't "doctor" it too much. Just follow good Phal culture and try to keep it going. You at least have a 50 /50 chance of saving it.
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Old 07-08-2013, 05:57 PM
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What you can't see in that picture are about 10 more lovely, healthy roots, so hopefully it will be okay, but the remaining leaf is beginning to look a bit yellow at the tip which is a little worrying.

Shall I put it back in the windowsill and treat it like my other Phals (water once every 10 days or so but otherwise leave them alone)?
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Old 07-08-2013, 06:36 PM
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I would water all Phals a bit more often, based on the extent of drying of the medium. You want to water while the medium is still slightly moist. For me, that's twice a week, but your conditions may be different.

[Edit] Oh, BTW, I would try to water just the roots on your crown-rotted plant. Keep water away from the stem/remaining leaf, if you can, to discourage additional rot.
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Old 07-08-2013, 11:18 PM
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Great job stopping the rot to the rest of the plant. I for one have never been able to stop it once it starts, so kudos! IT looks to me like it will make it by putting out a basal growth!
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Old 07-09-2013, 01:29 PM
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Thanks all.

I do hope I get a basal keiki as this was a gorgeous pink-spotted white Phal (called Dexter as it reminded me of the "blood spatter" Phal in 'Dexter') and I was upset to see it had crown rot.

I always make sure I only water the medium and keep water away from the plant - I actually sit them all in their own little bags with lukewarm water to about 2/3 of the way up the pot for 15-30 mins. My others have thrived on this - I even have another Phal that not only produced 2 more leaves recently, but also a keiki on the old flower spike and another flower spike with lots of little buds so I think it's happy! (I hope!) Considering it's just summer here I think it might also be a bit confused
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Old 07-09-2013, 01:51 PM
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Quote:
Originally Posted by Pringles View Post
I ... noticed the crown looked dry and woody even before the first application.
I would keep the plant isolated and check carefully for spider mites or mealy bugs. Though I'm no expert, I usually associate rot with mushy tissue. The dryness of the plant makes me think that insects are the culprits. Either way, it wouldn't hurt to keep the distressed plant in quarantine for awhile.

Last edited by slc; 07-09-2013 at 01:53 PM.
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Old 07-10-2013, 03:05 PM
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Quote:
Originally Posted by Pringles View Post
What you can't see in that picture are about 10 more lovely, healthy roots, so hopefully it will be okay, but the remaining leaf is beginning to look a bit yellow at the tip which is a little worrying.

Shall I put it back in the windowsill and treat it like my other Phals (water once every 10 days or so but otherwise leave them alone)?
Like Catt said, it depends on your conditions. You have to be the judge of that. Number one, stop worrying. These plants are amazing at coming back when you're not looking. Just read up on their culture and adjust for your particular conditions. A yellow tip on a leaf is not threatening, but it is up for consideration. Nothing has been mentioned here as to whether you hae unpotted it and checked the roots, though you did say there are ten good ones.

If it were me, I'd unpot and see what's going on under the surface. clean out any dead or rotten roots, clean out any mushy or rotten medium, maybe repot it in some fresh medium just for the heck of it.... up to you. The baby can be healthy, but diapers have to be checked. This is where the real learning about your orchid comes in.
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