Unusual Places you Believe palm trees could grow

[Aceraceae]

On 5/31/2020 at 4:11 AM, Palmfarmer said:

On 5/31/2020 at 2:50 PM, oasis371 said:

Closer to home, from Cape Cod down to south, coastal Connecticut, Long Island, Metro NYC, down the Jersey Shore to Cape May, NJ, Delaware, and coastal points south, gradually expanding westward as one proceeds south (basically, minimum zone 6B/7A climates).

 

A Washington Post article had a pretty simple way of putting this at least for the East Coast US, and it was that palms are basically found only where the mean temp in the coldest month is above freezing. 

[SeanK]

13 hours ago, Aceraceae said:

A Washington Post article had a pretty simple way of putting this at least for the East Coast US, and it was that palms are basically found only where the mean temp in the coldest month is above freezing. 

Not Surprised. Palms not native to areas where the ground freezes. The roots are herbaceous, not woody.

[Aceraceae]

On 12/23/2020 at 12:45 AM, SailorBold said:

Anyhow..as far as a different location.. I suppose it would be interesting to see palms in Santa Fe.. at an elevation of over 7200' !!

Santa Fe and maybe even the mildest parts of Colorado could grow a needle palm or sabal minor. 

[Las Palmas Norte]

On 5/31/2020 at 1:11 AM, Palmfarmer said:

...Sable Island, Canada. 

Should at least be able to grow some Sabal on Sable Island. 

[Aceraceae]

On 7/27/2022 at 10:06 PM, Aceraceae said:

Ketchikan might be a little too wet considering it does freeze a lot more than north western europe and have ice and snow. 

Faroe islands are a bit too cold and windy.

Falkland islands are cold for only 51 latitude compared to north Atlantic current locations. Annual average temp is below 7c 45 f. At least they are much drier than southern Alaska. 

If sable island could grow one then Nantucket should be teeming with them.

The northern British isles should be able to support a windmill palm. The cities are Stornoway, Kirkwall, and Lerwick, at 58, 59, and 60 degrees north latitude. Northern Scotland. Slightly farther north than SW Norway (Stavanger), where the northernmost palm island subtropical botanical garden is. 

Lerwick is over 5 c in the winter and over 10 c in the summer. It doesn't get a ton of rain and little snow. It it is windy, but not as bad as the faroe islands. 

Look at this summer forecast and large broadleaf trees. Scotland was deforested but some canopy is returning, and all the northern and western isles have a patch of trees in town. 

Edited July 29, 2022 by Aceraceae

[Foxpalms]

On 7/29/2022 at 5:06 PM, Aceraceae said:

The northern British isles should be able to support a windmill palm. The cities are Stornoway, Kirkwall, and Lerwick, at 58, 59, and 60 degrees north latitude. Northern Scotland. Slightly farther north than SW Norway (Stavanger), where the northernmost palm island subtropical botanical garden is. 

Lerwick is over 5 c in the winter and over 10 c in the summer. It doesn't get a ton of rain and little snow. It it is windy, but not as bad as the faroe islands. 

Look at this summer forecast and large broadleaf trees. Scotland was deforested but some canopy is returning, and all the northern and western isles have a patch of trees in town. 

They probably have palms growing there but I imagine you would be very limited to what you can grow, pretty miserable climate with those summer temperatures! Look at the forecast difference of Lerwick Vs London which is 550 miles further south.

[Aceraceae]

Here's at @Ivorhooper windmill palm at 56.6 degrees north in Western Scotland. 

1 hour ago, Foxpalms said:

They probably have palms growing there but I imagine you would be very limited to what you can grow, pretty miserable climate with those summer temperatures! Look at the forecast difference of Lerwick Vs London which is 550 miles further south

At the very least Western Scotland has some palms including this one at near 57° north, but I don't think the northern isles do. Day temps of 15 (60F) and overnights above 10 (50F) should allow windmill to grow a little bit and the winters rarely go below -5 (low 20s). The record is about negative 10 or between 15 and 20 f. 

Shetland at 60° North is a cold zone 9. Not zone 8 as shown on the homemade British and Europe hardiness zone maps. 

https://www.palmtalk.org/forum/index.php?/topic/56253-northmost-cultivation/&do=findComment&comment=862878

Edited August 2, 2022 by Aceraceae

[Foxpalms]

@Aceraceaeyes the British hardiness maps are not the most accurate and need to be updated. Alot still show London even central London as zone 9a, I don't think bougainvillea, jacarandas,kentias, archontophoenix cunninghamiana and Norfolk Island pines would survive in central London all unprotected if it was a zone 9a more like a high zone 9b with very small areas being a zone 10a and the majority of the outskirts a high end of zone 9a with some being on the lower end of 9a as you leave the urban heat island. There are lots of cordylines growing around the coast of Scotland.

[Josh76]

21 hours ago, Foxpalms said:

@Aceraceaeyes the British hardiness maps are not the most accurate and need to be updated. Alot still show London even central London as zone 9a, I don't think bougainvillea, jacarandas,kentias, archontophoenix cunninghamiana and Norfolk Island pines would survive in central London all unprotected if it was a zone 9a more like a high zone 9b with very small areas being a zone 10a and the majority of the outskirts a high end of zone 9a with some being on the lower end of 9a as you leave the urban heat island. There are lots of cordylines growing around the coast of Scotland.

There are unprotected Bougainvillea and Norfolk Island Pine in Fulham, West London!

[Foxpalms]

4 minutes ago, Josh76 said:

There are unprotected Bougainvillea and Norfolk Island Pine in Fulham, West London!

I know there's no way it's not atleast a zone 9b in Fulham but the UK hardiness maps are not updated in my opinion so alot still show all of London as zone 9a it isn't. Norfolk Island pines are a solid 9b/10a plant

Edited August 3, 2022 by Foxpalms

[Josh76]

3 minutes ago, Foxpalms said:

I know there's no way it's not atleast a zone 9b in Fulham but the UK hardiness maps are not updated in my opinion so alot still show all of London as zone 9a it isn't. Norfolk Island pines are a solid 9b/10a plant

https://goo.gl/maps/LHxgbvL5abUR747Q9

Edited August 3, 2022 by Josh76

[Josh76]

5 minutes ago, Foxpalms said:

I know there's no way it's not atleast a zone 9b in Fulham but the UK hardiness maps are not updated in my opinion so alot still show all of London as zone 9a it isn't. Norfolk Island pines are a solid 9b/10a plant

Here's a Bougainvillea

https://goo.gl/maps/XBVpmf2HQBwSA11z9