hort.net Seasonal photo, (c) 2006 Christopher P. Lindsey, All Rights Reserved: do not copy
articles | gallery of plants | blog | tech blog | plant profiles | patents | mailing lists | top stories | links | shorturl service | tom clothier's archive0
Gallery of Plants
Tech Blog
Plant Profiles
Mailing Lists
    Search ALL lists
    Search help
    Subscription info
Top Stories
sHORTurl service
Tom Clothier's Archive
 Top Stories
New Trillium species discovered

Disease could hit Britain's trees hard

Ten of the best snowdrop cultivars

Plant protein database helps identify plant gene functions

Dendroclimatologists record history through trees

Potato beetle could be thwarted through gene manipulation

Hawaii expands coffee farm quarantine

Study explains flower petal loss

RSS story archive

Re: CULT: zones

I've been thinking the same thing.

Plus the geographic information (i.e., state or province) tells me more
than zone about climate and potential performance of an iris here.

<I am wondering, however, if the data are really available to sustain
the endeavor you have launched upon. ..... It is generally regarded as a
fallacy to draw conclusions that are more precise than the data on which
they are based.>

<A totally different issue is the question of how indicative USDA Zone
designations of the average annual lowest temperature are of reblooming
iris performance. After all, this refers to a particular datum that
relates to a season when no irises are blooming except in the mildest
climate areas. I would think that perhaps the average length of the
frost-free growing season would be more predictive of reblooming iris
performance than the absolute low temperature that is reached in the
depths of winter, though obviously these two items are not uncorrelated
(but I expect that correlation is much less than perfect).

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>
talk archives: <http://www.hort.net/lists/iris-talk/>
photos archives: <http://www.hort.net/lists/iris-photos/>
online R&I <http://www.irisregister.com>

To sign-off this list, send email to majordomo@hort.net with the

Other Mailing lists | Author Index | Date Index | Subject Index | Thread Index

 © 1995-2017 Mallorn Computing, Inc.All Rights Reserved.
Our Privacy Statement