- Subject: [IGSROBIN] Rust
- From: Sandy Connerley <sandyc@SURFARI.NET>
- Date: Wed, 17 Jul 2002 21:05:39 -0700
While the rust cycle requires that the spores reside on leaves,
including dead ones (known to have survived for 12 weeks or longer on
dried leaves), and spores are carried by wind and water, Clemson
University Department of Plant Pathology recommends keeping zonal
pelargoniums out of the landscape where rust has occurred for a period
of our to six months to insure rust wil not occur the following year.
They said how long spores survive on dead leaves in a greenhouse or
landscape has not been determined.
Maryland Central Research and Education Center mentions that spores
remain viable (infective) in the greenhouse for 3 months or longer.
Unfortunately, this section of my research on problems of the plants
probably contains the least information.
Are you opposed to spraying? Hot water is a recommened treatment
for cuttings in UC information so wonder if pouring some very hot water
where the plants grew would do anything? Might be totally ineffective,
but who knows.