Scottish Rock Garden Club Forum

Specific Families and Genera => Pleione and Orchidaceae => Topic started by: JPB on December 20, 2015, 08:15:57 PM

Title: Pleione maculata infection?
Post by: JPB on December 20, 2015, 08:15:57 PM

I notice some orange-brown spots on some pseudobulbs of P. maculata.
Could it be a fungal infection? Or Brevipalpus?

Hans

Title: Re: Pleione maculata infection?
Post by: Alex on December 21, 2015, 10:09:55 PM

This is pretty common. It doesn't look like Brevipalpus, but more a superficial fungal infection which I think is caused by wet conditions. In my experience, this won't progress, so although it is unattractive, it isn't a huge problem.

Alex

Title: Re: Pleione maculata infection?
Post by: JPB on December 24, 2015, 04:59:06 PM

Thanks Alex. I had it before in other species and it has now infected my maculata's... Do you think I need an anti-fungal treatment of will keeping them drier do the trick?

Title: Re: Pleione maculata infection?
Post by: Maren on December 24, 2015, 06:04:07 PM

Hi, if you are worried about this, you can cut out the infected tissue with a very sharp knife, dust the wound with cinnamon or flowers of sulphur and let it dry. The bulb will still produce a flower and should multiply in the usual fashion.

By the way, I posted this bit of advice a few days ago but it seems that my post did not get uploaded?????

Merry Christmas!!! :) :) :)

Title: Re: Pleione maculata infection?
Post by: Chris Johnson on December 25, 2015, 08:34:38 AM

Quote from: Maren on December 24, 2015, 06:04:07 PM

Hi, if you are worried about this, you can cut out the infected tissue with a very sharp knife, dust the wound with cinnamon or flowers of sulphur and let it dry. The bulb will still produce a flower and should multiply in the usual fashion.

By the way, I posted this bit of advice a few days ago but it seems that my post did not get uploaded?????

Merry Christmas!!! :) :) :)

I read this a few days ago so it must have been there for a while. :o

Merry Christmas to all.

Title: Re: Pleione maculata infection?
Post by: Maren on December 25, 2015, 10:25:15 AM

Hello Chris,

Merry Christmas and a Happy New Year.

Thinking of you fondly when I inspect my happy and rapidly expanding live Sphagnum moss from up north. I hope the weather isn't too driech and that you are keeping nice and warm. :)

Title: Re: Pleione maculata infection?
Post by: Chris Johnson on December 25, 2015, 10:40:54 AM

The weather's appalling but we are cosy and I can fritter away days at the microscope. My thoughts are with Cumbrian folk at present.

Chris