Re: TB: Rot Question

In my gravelly soil, I've had the least rot and best survival when
rhizomes are planted with about an inch of soil on top.  Some cultivars
don't tolerate being covered, but those that don't tolerate it usually
rot here anyway.

I'm surprised to hear this kind of damage so far north of me, but the
southern 'wobble' line for erratic weather seems to have been well east
and north of me this year.  We never got hit by abrupt drops to the
teens from warmer temperatures like used to be the the norm here.

If it looks like the same thing is going to happen in the future (more
than a week with above freezing temperatures, night and day, with some
days in the 70s, followed by an abrupt drop to below 25), adding an
extra layer of mulch or soil to give the plants some time to adjust may
save them.
--
Linda Mann east Tennessee USA zone 7/8
East Tennessee Iris Society <http://www.korrnet.org/etis>
American Iris Society web site <http://www.irises.org>
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