How to deal with Stagnospora

Steven Hart hartsentwine.australia@gmail.com
Sat, 18 Apr 2015 18:54:16 PDT
Hi Cynthia, I have had this break out recently in my zephyranthes & it
wasn't until you mentioned yours that I realized what it is. We had a very
wet season & this can cause outbreaks although someone sent this to me in
dormant bulbs... There is a section on Stagonospora curtisii in our PBS
wiki, it recommends treatment with bleach, peroxide with water & systemic
fungicide. A couple of things that might help you reduce spread. Spores are
air bourn so removing contaminated leaves & burning or carefully disposing
is important. Replacing contaminated mix with a fresh well drained mix
reduces dropped spores, because it thrives in moist conditions. Avoid
watering leaves & bulb during contamination, try to water mix only. Air
flow or ventilation around them helps mix dry out after watering. Some
treatments recommended on the web are, destroy the bulbs, also hot water
treatment, but 100* for 30min would cook them i think, might be ok with big
bulbs. Others will know exactly which chemicals will help u I hope...
Best of luck getting it under control, it can spread very fast.
Steven

On 19 April 2015 at 09:59, Cynthia Mueller <cynthiasbulbs@hotmail.com>
wrote:

> I suddenly realized a large container of rain lily 'Katharina' red and
> yellow forms must have Stagnospora. All leaves are red/reddish brown. Will
> tip out container tomorrow to see if drainage is impeded inside. Have only
> experienced this earlier leaf-by-leaf with hippeastrums. What to do next?
> -Cynthia Mueller, Central Texas
>
> Cynthia W Mueller
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-- 
Steven : )
Esk Queensland Australia
Summer Zone 5  Winter Zone 10





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