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Old 08-09-2014, 01:19 PM
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Leaf Splittiing

Orchid growers are sometimes plagued with leaf splitting in their collection, particularly with phalaenopsis, paphiopedilums, and occasionally cattleya-types and others.

There are a variety of theories intended to explain the reason for such issues, many relating to humidity, light levels, dehydration followed by heavy watering, and watering frequency, but I believe there may be a nutritional basis, either alone or in conjunction with other parameters, so the goal of this is to collect a wide range of experiences to see if there is any correlation.

If you have an interest and can spare a couple of minutes, would you please submit your "leaf splitting" experience using the form here?

I'll let it run for a week or more before I tabulate and share the results.

Thanks
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Old 08-10-2014, 12:59 PM
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Interesting survey! As my only split so far was purchased that way I can't really give you much feedback.
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Old 12-01-2014, 09:47 AM
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interesting!
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Old 12-01-2014, 05:19 PM
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I have not had this problem yet. However, I have read of others having this problem and am very interested in discovering why it occurs.
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Old 12-01-2014, 05:33 PM
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Definitely will be interested in what you find, Ray. Keeping my eye on this one.
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Old 12-01-2014, 05:34 PM
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Hi Ray

The only time I ever see leaf splitting, there seems to be a mechanical cause associated with it (damage during a storm while outside, or mis-handling on my part, indoors or outdoors). It does not happen a lot, but when it happens, it seems to happen to only Phalaenopsis (big succulent leaves - easy target for mechanical damage).

Oh, BTW, I followed the link; there does not seem to be a form?
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Last edited by Catt Mandu; 12-01-2014 at 05:36 PM. Reason: Added comment re: link
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Old 12-05-2014, 01:00 AM
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I also have only had split leaves on two Phals that had them when purchased , so I don't have any input. I also see no form.
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Old 12-05-2014, 09:49 AM
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A brief update:

The form is at my website, but we are not allowed to provide links here...

After 4 months, I really haven't gotten a a sufficient number of responses, so trying to come up with a valid conclusion is pretty much impossible. However, high fertilizer application, coupled with low humidity shows up in the data reasonably frequently.

I guess this is another area needing far more research, although anecdotally, very-low concentration fertilizer solutions applied frequently seems to avoid the issue.
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Old 12-05-2014, 10:19 AM
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Ray, can you sum up the findings you did receive, since there were not many responses?

I had never heard of leaf splitting attributed to fertilizer issues. It would be interesting to see the number of people attributing splitting to over-fertilizing, and comparing it to other causes that were reported.
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Old 12-05-2014, 01:50 PM
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That's as much of a summary as I can muster.

My only guess - and that's all it is - is that by feeding excessively, you raise the solute content of the vascular fluids, so the plants take up more water to dilute it. Add that to a dry environment that can "harden" surface layers, and crack....
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Old 12-06-2014, 10:03 AM
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I have a fair few NOID phals that all get watered and fertilized on the same schedule. One of them is growing a new leaf and it has split, but really the only difference between that plant and the others is that when I first got it it had a split leaf. So seems to me that some plants are just more prone to it than others
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Old 12-06-2014, 11:00 AM
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I have no doubt of that!

FWIW, most of the responses concerned phals, catts were second, with one or two oncids.


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Old 12-06-2014, 08:33 PM
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There was a recent thread from someone that was having issues with splitting pseudobulbs on an Epicattleya Charlie Brown. I had similar problems with an orange Cattleya that I had about 25 years ago. Possibly both problems are genetic? Just a guess.
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Old 12-06-2014, 08:34 PM
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Actually I can't recall if that post was on OG or another forum.
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Old 12-06-2014, 08:42 PM
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Quote:
Originally Posted by Catt Mandu View Post
Actually I can't recall if that post was on OG or another forum.
It was on this forum
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Old 01-16-2015, 11:17 AM
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Hi everyone, I just wanted to share my experience about a Phal I rescued two days ago. It was severely dehydrated so the only thing I have done is giving it two good soaks: the first one the day I got it and another soak this morning. I found yesterday a case of split leaf (the leaf was not like that when I got it), but today it became a bit more "dramatic":


Last edited by Antonia; 01-17-2015 at 07:49 AM.
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Old 01-16-2015, 09:04 PM
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In trying to get my bulbo ambrosia to bloom, I am giving it a drier period. I see the first split leaf.
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