Perennials forum: USDA plant hardiness zone map

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Name: virginiarose
Virginia
Money talks but Chocolate Sings!
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virginiarose
Mar 12, 2012 12:35 PM CST
The USDA has updated their zone map, if you want to look up your zip code, here is the link and I am now in zone 8a. Green Grin!

http://planthardiness.ars.usda.gov/PHZMWeb/
Susan

In the spring, at the end of the day, you should smell like dirt.....Margaret Atwood
Name: Rick Corey
Everett WA 98204 (Zone 8a)
Sunset Zone 5. Koppen Csb. Eco 2f
I helped beta test the first seed swap Plant and/or Seed Trader Seed Starter Region: Pacific Northwest Photo Contest Winner: 2014 Vegetable Grower
Avid Green Pages Reviewer Garden Ideas: Master Level Garden Sages I was one of the first 300 contributors to the plant database! I helped plan and beta test the plant database. Charter ATP Member
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RickCorey
Mar 23, 2012 4:49 PM CST
I added a version of that link to my soignature block: jump directly to the "by ZIP code" page.

NOAA also has a "Freeze/Frost" date page, but I needed to look up my losest weather station to use it. It's a little more work, but there are two other links in my sig that let you dig out your local first and last frost dates.

AVERAGE dates, of course!

Name: virginiarose
Virginia
Money talks but Chocolate Sings!
I was one of the first 300 contributors to the plant database! Garden Ideas: Level 1 Avid Green Pages Reviewer Hibiscus Dragonflies Daylilies
Bee Lover Dahlias Butterflies Hostas Birds Lilies
virginiarose
Mar 23, 2012 4:58 PM CST
Thanks Rick!! I think I would like to check that out, do you have a link for us? Green Grin!
Susan

In the spring, at the end of the day, you should smell like dirt.....Margaret Atwood
Name: Rick Corey
Everett WA 98204 (Zone 8a)
Sunset Zone 5. Koppen Csb. Eco 2f
I helped beta test the first seed swap Plant and/or Seed Trader Seed Starter Region: Pacific Northwest Photo Contest Winner: 2014 Vegetable Grower
Avid Green Pages Reviewer Garden Ideas: Master Level Garden Sages I was one of the first 300 contributors to the plant database! I helped plan and beta test the plant database. Charter ATP Member
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RickCorey
Mar 23, 2012 5:50 PM CST
These are clickable links, or should be:

USDA Hardiness Zone by ZIP code
Locate USDA Weather Station ~~ (NOAA seems to be updating this page right now)
Freeze/Frost Dates ~~
Sunset Climate Zones ~~


Let's see if this untangles them from the "BB codes" ...

http://planthardiness.ars.usda.gov/PHZMWeb/InteractiveMap.as...
USDA Hardiness Zone by ZIP code

http://www.ncdc.noaa.gov/oa/climate/stationlocator.html
Locate USDA Weather Station
(NOAA seems to be updating this page right now:
"Currently undergoing maintenance and upgrades.
We are working to restore access as soon as possible.
We apologize for any inconvenience.")

http://cdo.ncdc.noaa.gov/cgi-bin/climatenormals/climatenorma...
Freeze/Frost Dates


Don't forget this alternative to USDA Zones:

http://www.sunset.com/garden/climate-zones/climate-zones-int...
Sunset Climate Zones ~~

Please let me know if the links don't work!


[Last edited by RickCorey - Mar 23, 2012 5:55 PM (+)]
Give a thumbs up | Quote | Post #231524 (4)
Name: virginiarose
Virginia
Money talks but Chocolate Sings!
I was one of the first 300 contributors to the plant database! Garden Ideas: Level 1 Avid Green Pages Reviewer Hibiscus Dragonflies Daylilies
Bee Lover Dahlias Butterflies Hostas Birds Lilies
virginiarose
Mar 23, 2012 6:29 PM CST
Ok, under the freeze frost dates, I am closest to Norfolk International, so there are three temps there for spring. I am having a problem reading the probability score. How do you see it? Are they giving me a percentage like 10 or 90% probably? If so then is it a probably that it will or that it won't?

Thanks very much for the links, this is very informative. I tip my hat to you.
Susan

In the spring, at the end of the day, you should smell like dirt.....Margaret Atwood
Name: Rick Corey
Everett WA 98204 (Zone 8a)
Sunset Zone 5. Koppen Csb. Eco 2f
I helped beta test the first seed swap Plant and/or Seed Trader Seed Starter Region: Pacific Northwest Photo Contest Winner: 2014 Vegetable Grower
Avid Green Pages Reviewer Garden Ideas: Master Level Garden Sages I was one of the first 300 contributors to the plant database! I helped plan and beta test the plant database. Charter ATP Member
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RickCorey
Mar 23, 2012 7:04 PM CST
Gotta run now, will try more tongiht

I think the 50% dates are:

36 F April 6 - tender
32 F March 20 - frost
28 F March 4 - hard freeze
Name: Rick Corey
Everett WA 98204 (Zone 8a)
Sunset Zone 5. Koppen Csb. Eco 2f
I helped beta test the first seed swap Plant and/or Seed Trader Seed Starter Region: Pacific Northwest Photo Contest Winner: 2014 Vegetable Grower
Avid Green Pages Reviewer Garden Ideas: Master Level Garden Sages I was one of the first 300 contributors to the plant database! I helped plan and beta test the plant database. Charter ATP Member
Image
RickCorey
Mar 23, 2012 10:49 PM CST
Sorry, had to run.

(1) Probability of later date in spring (thru Jul 31) than indicated.
(2) Probability of earlier date in fall (beginning Aug 1) than indicated.
(3) Probability of longer than indicated freeze free period.
(4) Probability of Freeze/Frost in the yearly period (percent of days with temperatures at or below the threshold temperature).

There's a 90% chance you'll have a 32F frost after March 3.
There's a 50% chance of HARD frost after March 4

There's a 50% chance of a 32F frost after March 20
There's a 10% chance of HARD frost after March 22

There's a 10% chance of A 32F frost after April 7


Thumb of 2012-03-24/RickCorey/250f20
Name: virginiarose
Virginia
Money talks but Chocolate Sings!
I was one of the first 300 contributors to the plant database! Garden Ideas: Level 1 Avid Green Pages Reviewer Hibiscus Dragonflies Daylilies
Bee Lover Dahlias Butterflies Hostas Birds Lilies
virginiarose
Mar 24, 2012 3:32 AM CST
Thank you Rick, that is what I thought but I wanted to be sure. So I am pretty safe after April 7 or 10% chance of being safe anyways. Green Grin!
Susan

In the spring, at the end of the day, you should smell like dirt.....Margaret Atwood
Name: Rick Corey
Everett WA 98204 (Zone 8a)
Sunset Zone 5. Koppen Csb. Eco 2f
I helped beta test the first seed swap Plant and/or Seed Trader Seed Starter Region: Pacific Northwest Photo Contest Winner: 2014 Vegetable Grower
Avid Green Pages Reviewer Garden Ideas: Master Level Garden Sages I was one of the first 300 contributors to the plant database! I helped plan and beta test the plant database. Charter ATP Member
Image
RickCorey
Mar 25, 2012 1:03 AM CST
I think you've got it right but said it wrong: 90% chance of being safe from frost after April 7. 10% chance of a late, light frost.

It might well go below 36F, but only one chance in 10 of a 32 degree frost.

I usually take April 7 or so as my 50% chance of frost date. March always gets to me, becuase we often have WEEKS of quite warm weather in February and sometimes even January. I've been feeling the warmth and getting over confiodent ... then like this year: more snow and frost in March than in Jan and Feb!

My ambition is to build some small, portable frames for little hoop tunnels. First use them to warm and dry the soil in some rasied beds, then shelter the seeds and seedlings so I can use all of the unsettled weather in march, plus some of February.

Who knows. maybe I'll find things I can overwinter in the ground under a little plastic. My Italian leaf broccoli just overwintered with no more care than my occasional words of awe and encouragement. Nice to have something dark green and helathy all winter!

Name: virginiarose
Virginia
Money talks but Chocolate Sings!
I was one of the first 300 contributors to the plant database! Garden Ideas: Level 1 Avid Green Pages Reviewer Hibiscus Dragonflies Daylilies
Bee Lover Dahlias Butterflies Hostas Birds Lilies
virginiarose
Mar 25, 2012 2:30 AM CST
Thanks very much for your input. I do have a lot of stuff wintersown and it needs to be potted up now and no where to put them. Seems like a mini hoop house would be real nice right now. Thumbs up
Susan

In the spring, at the end of the day, you should smell like dirt.....Margaret Atwood
Name: Evan
Pioneer Valley south, MA, USA (Zone 6a)
Charter ATP Member Plant Database Moderator Forum moderator Aroids Irises Celebrating Gardening: 2015
I was one of the first 300 contributors to the plant database! Tropicals Foliage Fan Bulbs Hummingbirder Lover of wildlife (Black bear badge)
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eclayne
Mar 26, 2012 6:51 AM CST

Plants Admin

A google search of "university of virginia freeze frost dates" brings up this page. http://climate.virginia.edu/YourVAGrowingSeason.htm and this pdf http://climate.virginia.edu/VA%20Latest%20Spring%20Frost%20D...

Here's mine: "university of massachusetts freeze frost dates" http://extension.umass.edu/landscape/sites/landscape/files/f...
Evan
Name: virginiarose
Virginia
Money talks but Chocolate Sings!
I was one of the first 300 contributors to the plant database! Garden Ideas: Level 1 Avid Green Pages Reviewer Hibiscus Dragonflies Daylilies
Bee Lover Dahlias Butterflies Hostas Birds Lilies
virginiarose
Mar 26, 2012 8:11 AM CST
Thanks Evan, see if I am reading this right. At Norfolk International there is only a 10% chance that I will see temps @ or below 32 after April 7?

Nice link by-the-way. Green Grin!
Susan

In the spring, at the end of the day, you should smell like dirt.....Margaret Atwood
Name: Evan
Pioneer Valley south, MA, USA (Zone 6a)
Charter ATP Member Plant Database Moderator Forum moderator Aroids Irises Celebrating Gardening: 2015
I was one of the first 300 contributors to the plant database! Tropicals Foliage Fan Bulbs Hummingbirder Lover of wildlife (Black bear badge)
Image
eclayne
Mar 27, 2012 6:56 AM CST

Plants Admin

That's how I read it Susan. Lucky you, my equivalent is May 23.

My guess is most gardeners can find their Freeze/Frost date by doing a similar Google search just by substituting there state university or agi school.
Evan
Name: virginiarose
Virginia
Money talks but Chocolate Sings!
I was one of the first 300 contributors to the plant database! Garden Ideas: Level 1 Avid Green Pages Reviewer Hibiscus Dragonflies Daylilies
Bee Lover Dahlias Butterflies Hostas Birds Lilies
virginiarose
Mar 27, 2012 3:37 PM CST
Oh, yeah no wonder you are in zone 6! Actually I have a farmers almanac, that worked out pretty well last year but this year there is so much junk in the thing I cannot find the important stuff, when did they start putting recipes in there? Blinking
Susan

In the spring, at the end of the day, you should smell like dirt.....Margaret Atwood
Name: Carole
Clarksville, TN (Zone 6b)
Cherish today
Charter ATP Member Garden Sages Plant Identifier I was one of the first 300 contributors to the plant database! I helped plan and beta test the plant database. I helped beta test the Garden Planting Calendar
Garden Ideas: Master Level Celebrating Gardening: 2015 Cat Lover Avid Green Pages Reviewer Lover of wildlife (Raccoon badge) Birds
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SongofJoy
Mar 28, 2012 11:45 AM CST
I noticed that about the Almanac. Very difficult to navigate around in it anymore. Grumbling
The best and most beautiful things in the world cannot be seen or even touched -- they must be felt with the heart. ~ Helen Keller
Name: virginiarose
Virginia
Money talks but Chocolate Sings!
I was one of the first 300 contributors to the plant database! Garden Ideas: Level 1 Avid Green Pages Reviewer Hibiscus Dragonflies Daylilies
Bee Lover Dahlias Butterflies Hostas Birds Lilies
virginiarose
Mar 28, 2012 4:30 PM CST
Thumbs up
Susan

In the spring, at the end of the day, you should smell like dirt.....Margaret Atwood
Name: Evan
Pioneer Valley south, MA, USA (Zone 6a)
Charter ATP Member Plant Database Moderator Forum moderator Aroids Irises Celebrating Gardening: 2015
I was one of the first 300 contributors to the plant database! Tropicals Foliage Fan Bulbs Hummingbirder Lover of wildlife (Black bear badge)
Image
eclayne
Mar 28, 2012 5:44 PM CST

Plants Admin

Damn yanks.
Evan

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