Re: CULT: lime-sulfur

--- In iris-talk@y..., "Char and Mike at Melba, ID" <charmike1@j...> 
wrote:
" Has anyone ever used lime-sulfur, summer foliage strength (?), on 
iris for insect control and/or fungicide?"

Yes.  Annually when we sprayed the orchards (west of Fruitland during 
our Idaho years) we hit the iris beds and all the rest of the 
ornamentals too.  They looked "burned" for a few days, but recovered 
quickly, and the new growth as it came was pest and disease free for 
quite some time.

We did have problems with thrip during bloom season on occasion, and 
the dormant spray didn't do a thing for Botrytis contol--sanitation 
was the key on that, and keeping winter soil temps lower if 
possible.  But we had very little problem with leaf spot and other 
summer pests after we started the dormant oil treatment.

Neil Mogensen  now in western NC


 

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