dry rot of bulbs in winter storage

Monica Swartz eciton@utexas.edu
Mon, 13 Jun 2016 18:59:09 PDT
Hi Uli, I have had problems with a dry rot during summer storage of 
winter growers. Last year was very bad. Unlike your description, my 
infection turns the bulbs hard and if broken, they are powdery and 
tan-colored. It seems to be an infection that I suspect is spread by 
fungus gnats in the spring. It doesn't seem to matter how the bulbs 
are stored or if they get supplemental water during the summer. I've 
learned that even if some bulbs in the same pot with infected bulbs 
look ok, they rarely are and don't wake in the fall. All pots are 
treated for gnats, but they breed in the ground here so they still 
investigate the pots. My best defense is keeping multiple pots of 
each species in case a pot succumbs.  If anyone knows a way to treat 
a pot so that the gnats won't run all over it, I'd love to hear it. 

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