Cymbidium bulb rot and yellowing leaves in Semi-Hydro.

[Ray]

I don't agree. Wetness is no issue - all of my cymbidiums are in S/H culture, land I see nothing of the sort.

The fact that they are planted so deeply may be playing a role, however. Personally, I'd grab 'me by the leaves and tug them up a bit..

[james mickelso]

I don't have an issue with S/H but this looks suspiciously like rot from being too wet. Not because it is in S/H but because it became and stayed too wet and unless it is dried out it will continue to rot. Once the bacteria invade they keep at it until the environment changes. Spraying with a bact/fungicide won't help now because the invasion has taken hold on the inside tissues. I've been wrong before but this looks exactly like the 20 or 30 I had rot on me when I started out. Too dense a mix and stayed too wet for too long.

[Cym Ladye]

James,

Your statements for the most part are true but this is not the problem here. The rot started in the new growths, not the old bulbs, so if you really mean to cut off the old bulbs first, you are not solving this problem as they are perfectly good, just shriveled. There also was no smell to the bulbs.

Just a hint for the future: when you remove leaves from a bulb to convert it to a "feeder" bulb, also remove the roots. I do not think it advisable at this stage for empiref to disturb the plant again, but when he next repots it, removing the dead roots should be on the schedule.

Cym Ladye

[james mickelso]

The old roots look like they are pretty hollow. Are any of them still functional? I usually cut off all of the roots from all but the newest three pbulbs. Put the remaining in as small a pot as will fit and let them grow there until the new growth appears then repot the whole mess into a good pot with coarse media. Then I can water to my heart's content.

[empiref]

Hello all.

I hope you all had a Merry Christmas with your families and loved ones.

Thank you all for your contribution to his thread. Unfortunately, the Cym in question is dead and gone, I couldn't save it.

I am left with 3 other cymbidiums, they are doing really great. One has 3 flower spikes, another has 5 flower spikes and the last one didn't spike this year, but has 6 new bulbs.

After I lost my Cym, I did what Ray advised and that was to lift the Cyms to the top of the medium so the base of the bulbs would be resting on the hydroton instead of having the bulbs buried half way.

Will post some pics soon.

Best Regards to all.

[Antoshka007]

Hello all,
I have the same problem with my cymbidium, leaves turning yellow and dying it's passing from one plant to the other, I spray them with two systemic antifungal but nothing working, when I cut a bulb I found it brown from inside, I lost 8 plants till now any idea

[Cym Ladye]

Originally Posted by Antoshka007

Hello all,
I have the same problem with my cymbidium, leaves turning yellow and dying it's passing from one plant to the other, I spray them with two systemic antifungal but nothing working, when I cut a bulb I found it brown from inside, I lost 8 plants till now any idea

First, separate your remaining plants so none are touching each other, nor water draining from them contacts any other plant. Then, although it may be too late for the 8 plants you say you have lost, refer to the advice I gave empiref at the beginning of this thread.

[Antoshka007]

Originally Posted by Cym Ladye

First, separate your remaining plants so none are touching each other, nor water draining from them contacts any other plant. Then, although it may be too late for the 8 plants you say you have lost, refer to the advice I gave empiref at the beginning of this thread.

Thank you for your reply
I already separated them, and you are right when rot start it's very difficult to stop it.

[estación seca]

How hot is your growing area? They're more susceptible to rot when they're stressed.