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  #1  
Old 03-20-2010, 01:41 PM
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King_of_orchid_growing:) King_of_orchid_growing:) is offline
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King- Are you saying that the withered leaves are a sign of overwatering? I've seen them more often in underwatering- could be wrong though, it's just my experience.
As a whole, these are signs of over watering.

1. "75% root damage".

a. Black and mushy roots along with hollow beige remnants of roots. Sometimes the "wiry" white or beige/light brown core of the root is evident without pulling off the dead velamen.

2. Leaf wrinkling due to insufficient water, which ironically is due to root damage from too much water.

3. Leaf dropping either with signs of yellowing or without.

a. Often the site of the leaf disconnecting with the petiole is tender and waterlogged.

b. Sometimes the petiole itself is the one that turns yellow, and the leaf just drops without turning yellow at all.

4. The dead give away is the fact that Triffid mentioned the previous owner put it in a pan of standing water.

When diagnosing, you gotta look at the whole picture, not just focus on one aspect of the problem.

Sometimes the cause is singular. More often than not, there are multiple causes to the ill health of the plant.

There are times when getting to the root problem itself and bypassing all the other lesser factors will bring about the cure. Other times all the factors need to be taken care of. In the case of viral infections, nothing can be done, and the plant must be destroyed.
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Last edited by King_of_orchid_growing:); 03-20-2010 at 01:46 PM..
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Old 03-20-2010, 01:46 PM
Izzie Izzie is offline
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Phal in Recovery, may need extra advice? Two Large Leathery Leaves? Female
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Originally Posted by King_of_orchid_growing:) View Post
As a whole, these are signs of over watering.

1. "75% root damage".

a. Black and mushy roots along with hollow beige remnants of roots. Sometimes the "wiry" white or beige/light brown core of the root is evident without pulling off the dead velamen.

2. Leaf wrinkling due to insufficient water, which ironically is due to root damage from too much water.
Oh duh, I knew that. Sorry, I wasn't thinking. Of course the leaves would wither if their root system no longer works.

Speaking of that wiry core- can it still draw up nutrients/water? I've noticed them when repotting sad 'chids, and always wondered if I should leave them after removing the rotten velamen or not.
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Old 03-20-2010, 01:50 PM
King_of_orchid_growing:)'s Avatar
King_of_orchid_growing:) King_of_orchid_growing:) is offline
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Speaking of that wiry core- can it still draw up nutrients/water? I've noticed them when repotting sad 'chids, and always wondered if I should leave them after removing the rotten velamen or not.
Don't know. I've often wondered the same thing.

I haven't found an article in a peer reviewed scientific journal that I'm able to access for free that deals with this question.

I also took a class in botany to hopefully answer some of the questions I had about orchid anatomy.
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Old 03-20-2010, 01:52 PM
Izzie Izzie is offline
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Phal in Recovery, may need extra advice? Two Large Leathery Leaves? Female
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Don't know. I've often wondered the same thing.

I haven't found an article in a peer reviewed scientific journal that I'm able to access for free that deals with this question.
We should do a science experiment.

It certainly wouldn't be detrimental to leave them would it? I mean, there's no velamen to rot and add to the ickiness.
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