Re: New USDA zone map
I thought that Phase 2 sounded hopeful.
----- Original Message -----
From: "james singer" <email@example.com>
Sent: Friday, October 28, 2005 6:19 PM
Subject: Re: [CHAT] New USDA zone map
You got that part about the Sunset Zones right, Daryl. The data is
there to do the map right; the will/money is probably not.
On Oct 28, 2005, at 5:39 PM, Daryl wrote:
I remember when the AHS Heat Zone Map was introduced, and Tony's
When I saw the c### that the AHS was promoting for a new Hardiness
I figured he'd go ballistic. I'm glad - it seems like he did, and we
get something useful out of it.
It would be great if we could get something like the Sunset Zones with
microclimates taken into consideration.
Gardening on Heavy Clay
----- Original Message ----- From: "James R. Fisher"
Sent: Friday, October 28, 2005 5:03 PM
Subject: [CHAT] New USDA zone map
Tony Avent of Plant Delights had a part in the construction of the
new USDA zone map. Here he describes some of its details to John Bryan
(author of the bulb book):
Subject: Re: [pbs] Climate zones
Date: Fri, 28 Oct 2005 15:33:08 -0400
From: Tony Avent <firstname.lastname@example.org>
To: Pacific Bulb Society <email@example.com>
Work on the new USDA map began on August 18, 2004. In 2003, a draft
version was released by the American Horticulture Society which caused
quite an uproar in the horticultural community. This revision would
done away with the "a" and "b" zone designations and would have been
on a fifteen year sample (1986-2001) of climatic data. By using a
warm period sample, the draft map would have moved Chicago into zone
made other such disastrous errors.
Thanks to the support of Dr. Judy St. John of USDA-ARS, the map
was put on hold until input from the stakeholders (government term for
folks most affected by government decisions) could be gathered. The
18 meeting included representatives from USDA- ARS, the American
Horticulture Society, the American Association of Botanic Gardens and
Arboreta, University Researchers, and representatives of the nursery
The project will consist of two phases. In Phase I, the map will be
reconstructed using the most recent 30 years of average annual extreme
minimum temperatures. The map will also retain the "a and b"
For the first time, the map will include a better breakdown of
effects, urban heat islands, wind patterns, and elevation differences.
to advances in interpolation algorithms, the map will pick up on small
differences that were previously missed. The map will be made
on-line where it can be searched both by city and zip code. The
will be clickable for more detailed climatic data to satisfy what the
research scientists called, "those pointy-head weather nerd types."
Phase II of the project will involve overlay maps for other factors
duration of cold, summer heat factors, and possibly air flow patterns.
not often that I get excited about a government project, but this
huge improvement for our industry. Thanks both to the USDA-ARS for
their resources available and for all of the committee members for
time and input into the process.
To sign-off this list, send email to firstname.lastname@example.org with the
message text UNSUBSCRIBE GARDENCHAT
Other Mailing lists |
Author Index |
Date Index |
Subject Index |