CULT: Rot - retention/persistence in soil?


Because of an abnormally wet spring here, I had the dubious honor of 
making the acquaintance of iris rot for the first time. Lost several 
varieties (mostly, but not all, nice big fat California rhizomes that 
has been planted only last year). As a result. there are lots of "empty 
spaces" in my iris rows.

My question is whether I can/should replant those "hot spots" with other 
irises, or if the rot (bacteria?) persists in the soil there. If it does 
remain in the soil, is there a treatment that can be applied in small 
areas like that to make it safe for irises immediately (I've read of 
bleach and Comet treatments on the rhizomes themselves, but the soil?)or 
would it be best to leave the spot fallow for a while. How long? I could 
just pop some annuals in those spots, I guess, but the iris beds are 
usually reserved just for iris......

Bill Wells (in southern MO with lots of new irises waiting to be planted 
and many more on the way but much sod to be removed to make planting 
possible)


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