Botrytis on Cyclamen coum

RC Weber via pbs pbs@lists.pacificbulbsociety.net
Sun, 30 Jan 2022 14:50:52 PST
Would a weak solution of bleach & water be a good idea?

I'm thinking in terms of a quick swish or dunk (rinse the roots maybe?) 
and then allow to dry before re-potting.

The dry time, a few minutes at most, would allow the bleach to vaporize 
so it doesn't linger in the fresh soil.  When you can't smell the bleach 
on the bulb or aerial parts, it's ready for repotting.

Obviously, examining the extent of infection during this would probably 
be a good thing.  :-)

And I concur with totally fresh soil & a well-scrubbed (& bleached & 
dried?) pot, then into better light & air movement.  A grow-light might 
be an idea.

Just thinking ...
Cate
Portland OR USA
zone - changing ... :-p


On 30-Jan-22 1:53 PM, R Hansen via pbs wrote:
> Nils has a problem with botrytis  on Cyclamen coum, and the first thing I'd
> do is repot into a fast-draining mix, then water from the bottom and maybe
> add about 1/4 dose of liquid fertilizer. The combination of damp soil, lack
> of air circulation, inside habitat, etc. are all probably contributing
> factors. I have a couple coum inside in a garden window facing west right
> now. They're only here while they flower and will go out again shortly. Few
> cyclamen like to be inside, especially the species. I have rolfsianum in
> this same garden window, and it's clear they are not getting enough light.
> 
> I've not ever had botrytis on indoor cyclamen and always change potting soil
> the minute I buy one, florist's hybrid or not. Hope this helps. Coum do like
> more moisture so keep an eye on them; you can check the watering status by
> lifting the pot up. The lighter it is, the drier it is. As soon as you can,
> put the coum outside for more light and air circulation, even if it's only
> out during the day. Protect from freezing however in its weakened state.
> 
> Robin Hansen
> Southwestern Oregon
> Cold, sunny shifting to rain, at last.
> 
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