Selenipedium success????

[KyushuCalanthe]

Interesting choice of substrate Berthold. Can you explain why you are favoring kanuma this go around?

 

[Berthold]

Kanuma was the only substrate in which there was no infection at plants of a friend.
But I don't know, what was the true reason for the healthy plant.

Kanuma/Akadama is similar to the original material around the roots. My be that some original mycorrhiza fungi at the roots can survive in that substrate, at least for some time.

 

[naoki]

Interesting. I forgot the pH of kanuma, but it is fairly acidic, I believe. In low pH, Phosphorous is likely to be washed out easily, and this might encourage the plant to keep the association longer with mycorrhizae? In many plants, high P discourage the associate with some mycorrhizae. I'm not sure if this is the case for orchid mycorrhizae, but Tom or Berhtold probably know.

 

[Berthold]

Kanuma pH-value not really exists because the are nearly no components which are water soluble. But in long term the pH-value of Kanuma approaches about 5.5.
If You set the Kanuma pot in the rain, the pH-value will be for some weeks the value of the rain water.

 

[NYEric]

Yes, but that is the condition I got the plants.

So now you have 3 pots?

 

[Hakone]

Interesting. I forgot the pH of kanuma, but it is fairly acidic, I believe. In low pH, Phosphorous is likely to be washed out easily, and this might encourage the plant to keep the association longer with mycorrhizae? In many plants, high P discourage the associate with some mycorrhizae. I'm not sure if this is the case for orchid mycorrhizae, but Tom or Berhtold probably know.

A Review

http://www.slippertalk.com/forum/showthread.php?t=25006&highlight=hakone+kanuma
http://www.slippertalk.com/forum/showthread.php?t=23781&highlight=hakone+cypripedium&page=4

 

[reivilos]

A Review

http://www.slippertalk.com/forum/showthread.php?t=25006&highlight=hakone+kanuma
http://www.slippertalk.com/forum/showthread.php?t=23781&highlight=hakone+cypripedium&page=4

There is no *feedback* on kanuma usage for paph...

 

[Berthold]

There is no *feedback* on kanuma usage for paph...

I don't see any sense in using Kanuma for Paphiopedilum. For Selenipedium it seems to help

 

[reivilos]

I don't see any sense in using Kanuma for Paphiopedilum. For Selenipedium it seems to help

Neither do I.
That's the reason why Hakone's feedback was must awaited... Especially because he did a complete switch to kanuma :
http://www.slippertalk.com/forum/showthread.php?t=25006&highlight=hakone+kanuma&page=3

 

[naoki]

According to one (qualitative) experiment, there might be some advantage of Kanuma with root growths of P. micranthum for some people (it's in reivilos's post here). I'm also curious to hear Hakone's experience.

 

[Berthold]

According to one (qualitative) experiment, there might be some advantage of Kanuma with root growths of P. micranthum for some people (it's in reivilos's post here).

For micranthum and armeniacum I mix about 20% Akadama in the pine bark, but no Kanuma. Kanuma is for the acid domain.

 

[reivilos]

From my experience, kanuma doesn't work well in the medium term.
6 months on, on a few species, the foliage looked good but the roots were gone.

 

[Berthold]

in the last 3 months the plant grew 5 cm (2 inches for the non metrics). So roots are operating.

 

[NYEric]

in the last 3 months the plant grew 5 cm (2 inches for the non metrics).

Thank you, thank you.

 

[SlipperFan]

So far, so good!

 

[Seb63]

Very interesting ! I tried twice but I didn't succeed !

 

[dodidoki]

Here is mine this moment, almost 2 years old at me:

 

[Dido]

looks nice congrats