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  #21  
Old 07-24-2021, 04:59 PM
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SouthPark SouthPark is offline
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Mechanical stability is definitely a consideration. I have also read about 'hydrotropism'. Maybe it could be a feature of at least some orchids.

Also - the other consideration is that the roots - once they are growing - needs to go somewhere - and occupy space. So in a confined area, like a pot - the roots probably eventually get out to the extremities - eventually.


Last edited by SouthPark; 07-24-2021 at 07:30 PM..
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  #22  
Old 07-25-2021, 08:17 AM
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Quote:
Originally Posted by SouthPark View Post
Mechanical stability is definitely a consideration. I have also read about 'hydrotropism'. Maybe it could be a feature of at least some orchids.

Also - the other consideration is that the roots - once they are growing - needs to go somewhere - and occupy space. So in a confined area, like a pot - the roots probably eventually get out to the extremities - eventually.
In the wild, it’s definitely an “all of the above” situation. Lots of roots provides more mechanical stability, but also more water-gathering capacity as well. In captivity, with a more attentive caregiver, a smaller root system might be sufficient.

The reason I supposed the stability factor is because I observed plant putting out roots close to the base going immediately downward into the medium, while the ones becoming aerials tend to emerge higher up - sort-of how you’d attach guy wires to an antenna tower.
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