Perennials In High Temps/Humidity
- To: perennials@mallorn.com
- Subject: Perennials In High Temps/Humidity
- From: B* C*
- Date: Fri, 19 May 2000 03:10:42 EDT
Check the first edition (may be in the second but as it is incredibly
expensive I don't know) of Alan Armitage's Herbaceous Perennial Plants. He
is in Georgia, and is very good about indicating which ones are not good in
southern climates. There are of course quite a few of them. He puts a zone
number to it if he has sufficient information.
And no, they don't usually go down to below 75 and certainly not 70 during
July and August.
Bob Campbell
>From: "Marge Talt" <mtalt@clark.net>
>Hmmm.....Bob, well UK doesn't count because it's not warm winters -
>ours aren't, really - it's the hot, humid nights of summer that I
>theorize kill off plants who are happy in zones 2 and 3 and sometimes
>4. A couple of weeks of 95F doesn't count - we get that for the
>entire month of July and hotter - with no breaks - and continuing
>into August...just finished having a week of that lovely temp. here
>in May:-) Do your summer nights - as a general rule - cool down
>below 70 or 75F in summer?
>
>My theory is developing because I cannot keep plants like Cornus
>canadensis alive...they just melt away in a slow, agonizing (to
>watch, anyway) death. Seems to happen with any plant I try who is
>hardy to zone 2 or 3...hence this budding theory that I keep trying
>to test. Need people from MD, VA, NC, SC, and points south and west
>of that to testify here to help prove or disprove my theory...tho'
>certainly appreciate your input...and am thoroughly jealous of your
>plants.
>
>Marge
>
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