PalmsNorth.com

http://planthardiness.ars.usda.gov/PHZMWeb/Default.aspx[/i]

Don't they just put a new year on top of last year's chart?

Welcome aboard, NYCpalmManiac.

Let's see the palms you're a maniac about...

Barb

You can zoom into each state and get a closer view!

darn! still a zone 6b. I was hoping I could grow palms outside with no protection.

Tulsa was moved from zone 6b to 7a, and my parent's Oregon beach home was moved zone 8b to 9a. Hooray!
Also, Oklahoma's native palms in McCurtain county are now in zone 8a.

TerdalFarm wrote: Oklahoma's native palms in McCurtain county are now in zone 8a.

Too bad to those of us who is hoping thrive it as a Zone 7b palm

TerdalFarm wrote:Tulsa was moved from zone 6b to 7a, and my parent's Oregon beach home was moved zone 8b to 9a. Hooray!
Also, Oklahoma's native palms in McCurtain county are now in zone 8a.

wait... Erick , how did your zone go UP, concidering how cold your winter was? Did you not go -30? Doesnt the record low define the hardiness zone?

Not sure, but I think they used average winter lows from 1996 - 2005. Does anyone know?

Correction:
"Zones in this edition of the USDA Plant Hardiness Zone Map (PHZM) are based on 1976–2005 weather data."
http://planthardiness.ars.usda.gov/PHZM ... tsNew.aspx

More detail:
"The zones in this edition were calculated based on 1976-2005 temperature data. Each zone represents the average annual extreme minimum temperature for an area, reflecting the temperatures recorded for each of the years 1976-2005. This does not represent the coldest it has ever been or ever will be in an area, but it reflects the average lowest winter temperature for a given geographic area for this time period. "
http://planthardiness.ars.usda.gov/PHZM ... aking.aspx

I think this link has the new Canadian map:
http://atlas.agr.gc.ca/agmaf/index_eng. ... ssZone2000;

Thanks Erik

Damn, only a pixel away from heaven...

http://atlas.agr.gc.ca/agmaf/index_eng. ... sZone2000;

Barb

Edit: my link only went to the main page (sorry) instead of my location.

Thanks to all for the detailed maps. I had no idea my 7a was so close to being a 7B (Harford County Md. just off the Chesapeake Bay).
On another note, still have yet to completely cover my newly planted (August 2011) Trachy's. They've been protected fairly decently with bubble wrap around a cage and christmas lights but no protection on top. The top of the fronds are open to the elements with no damage (at least not from the temps). And from the latest forecast (at least for the next week or so) the temps won't really be getting below freezing. Don't get me wrong though, as soon as I hear something nasty is coming my way i'll do what I need to do so they don't take a hit.

still have yet to completely cover

Maybe you won't have to this winter

That certainly is my hope especially since the average temp has now started to increase again. Albeit very slowly. I Can't let myself forget we still have another full month of real winter ahead.

Bah! I am still 7A. No upgrade to 7B o 8A for me.

TerdalFarm wrote:Correction:
"Zones in this edition of the USDA Plant Hardiness Zone Map (PHZM) are based on 1976–2005 weather data."
http://planthardiness.ars.usda.gov/PHZM ... tsNew.aspx

More detail:
"The zones in this edition were calculated based on 1976-2005 temperature data. Each zone represents the average annual extreme minimum temperature for an area, reflecting the temperatures recorded for each of the years 1976-2005. This does not represent the coldest it has ever been or ever will be in an area, but it reflects the average lowest winter temperature for a given geographic area for this time period. "
http://planthardiness.ars.usda.gov/PHZM ... aking.aspx

So..... Then why am I zone 3 or 4? My average low for nauary is -23C. Does that not make me zone 6 by that logic?

Jesse- NO NO NO! It's the average EXTREME low for each winter that defines your USDA zone. If you look at Minnesota on the new map, and extend it out, it looks like you're 3b/4a!

oh man! I slot right inbetween 6a east and west of me! I think I was downgraded to a 5b....

Don't know that i can believe this, It has me at 7a..seems a bit too hopeful!!!

How accurate does anyone here think that map is to them??? I don't think for my area it's accurate at all.

It isnt too bad up here. The hard part, is finding the areas where the zones change. With in 24km, the zone goes from a cold zone 5 at the lake shore, to a cold zone 3 (where the airport is), and there are some zone 2 that fit into city limit. I can get away with hibiscus here, and an hour drive west, you can barely grow daylilies. I use the zone as a bench mark, and plant what ever I feel needs to be planted, and hope for the best. The plants are a better indicator of zone (especially long term plantings), then some human contrived map IMO

sashaeffer wrote:How accurate does anyone here think that map is to them??? I don't think for my area it's accurate at all.

Mine is close, but my avg. for the area is a zone 5b just like the old map shows and I got this figure from warmer years that than have all together?
But I think they did well with the place I lived on the snake river with the up-grade. But I don't think any place in Idaho is a zone 7b like they have now.

What I don't get is why USA map does not jive with the Canada map in the North-West part of Washington? Shows it warmer in the Washington map?

The Canadian map is crap. It factors in other variables and tends to exaggerate the zone ratings by .5-1.5 USDA zones... A real shame because there are all kinds of Canadians who now think they're in zone 6, when in reality they live in very cold zone 5's! This used to really get to me when I'd see a post from someone in Montreal saying 'Zone 6' or Toronto saying 'zone 7', which is simply not the case!

I, for one, find this new map very accurate, and imagine that for any area if you go back and look at the data, will find it bang on the money! I think there is even a feature that will let you see the average extreme minimum low for the period for any given area. It's pretty in depth actually!