Roystonia regia - Farthest North

[gilles06]

Hi,

There are some in Ibiza island, Spain, at 38°52'43,05" N, 1°22'22,44" E.

Sorry no photo!

salut.

[spockvr6]

In Florida, the furthest north royal palms that survived the big 12/89 freeze are on Merritt Island and St. Petersburg. Since then royals have been replanted and growing in south Daytona Beach and Orlando.

Eric-

I think a couple of them survived in a little town called Crystal Beach, FL (just north of Palm Harbor and south of Tarpon Springs). I spotted these craggy old things about 5 years ago and they look to have been in the ground a long time, with some pretty good battle scars in the trunk!

St. Pete has many many old Royals and this seems to be, as you noted, the northernmost area on the westcoast of FL where there was widespread survival.

I have to agree with you about those in Saint Pete. Especially along the bay front in the old north east and sunken gardens area all the way up to Gandy Blvd. The ones at the sunken gardens are 110 years old. They still look good but sadly they are at their end of their life span. They already lost a few because of age. Also you will see very old royals in the historical old north east area near the sunken gardens peaking thru live and laurel oaks. Its a amazing site to see. There are many not just one or two. All of them look pretty healthy with large crowns. Perfect spot for them with a high water table and a warmer microclimate from the bay. I am from east coast of florida. In my opinion those are the best looking ones furthest north in florida period. East Coast, Inland and West Coast you name it. I am comparing those with ones north of Stuart and they pretty good competion with them as well. Sorry central Florida east coast. Show me some pictures and proof me wrong or come over and see for yourself. You will be amazed like me.

You are right about the Sunken Gardens area! That place is very very cool! I agree with you on the appearance of the Royals and other palms/plants there.

The Old Northeast is also one of my favorite areas. Not only lots of very old palms, but the houses are of a period long gone in Florida.

[DavidLee]

In Florida, the furthest north royal palms that survived the big 12/89 freeze are on Merritt Island and St. Petersburg. Since then royals have been replanted and growing in south Daytona Beach and Orlando.

Eric-

I think a couple of them survived in a little town called Crystal Beach, FL (just north of Palm Harbor and south of Tarpon Springs). I spotted these craggy old things about 5 years ago and they look to have been in the ground a long time, with some pretty good battle scars in the trunk!

St. Pete has many many old Royals and this seems to be, as you noted, the northernmost area on the westcoast of FL where there was widespread survival.

I have to agree with you about those in Saint Pete. Especially along the bay front in the old north east and sunken gardens area all the way up to Gandy Blvd. The ones at the sunken gardens are 110 years old. They still look good but sadly they are at their end of their life span. They already lost a few because of age. Also you will see very old royals in the historical old north east area near the sunken gardens peaking thru live and laurel oaks. Its a amazing site to see. There are many not just one or two. All of them look pretty healthy with large crowns. Perfect spot for them with a high water table and a warmer microclimate from the bay. I am from east coast of florida. In my opinion those are the best looking ones furthest north in florida period. East Coast, Inland and West Coast you name it. I am comparing those with ones north of Stuart and they pretty good competion with them as well. Sorry central Florida east coast. Show me some pictures and proof me wrong or come over and see for yourself. You will be amazed like me.

You are right about the Sunken Gardens area! That place is very very cool! I agree with you on the appearance of the Royals and other palms/plants there.

The Old Northeast is also one of my favorite areas. Not only lots of very old palms, but the houses are of a period long gone in Florida.

Its little bit in the cut. I dont think many know about it. Just locals and few residents in Pinellas like yourself. First time I went there I was like wow. Coble stone roads and old mansions and homes with alot of tropicals, palms and live oaks. Very charming place. I am not in Tampa anymore. I am in South Korea now. When I was in Tampa I used to visit Kopsick Palm Arboretum in Saint Pete all the time when I didnt have anything to do. Downtown and Old North East are one of my favorite areas too. When you see those old palms in the Old North East area you just want to start planting more palms in your yard. Thats my problem. I am a Palmaholic. Another place I discovered Royal palms was in Cairo,Egypt. They are everywhere there along with Banyan trees. Especially near the Nile River. I was saying wow there too. One day when I go back to Florida I will take photos to share with everybody.

I have to correct myself on my last post. The Sunken Gardens has some Royal Palms thats are 110 years old but not all of them are that age.

If I remember correctly probably little over 20 are that age. It will be a sad day when those go. I dont think the gardens will be the same after that.

[happ]

At N34 I am certainly not very far north for Cuban Royal but maybe far enough to effect the growth characteristics. Someone in California commented a while back that roystonia regia tend to have a fatter trunk than what is commonly found in Florida. I don't see a lot of royals in metro Los Angeles but those I do come across seem relatively happy.

This is a fast grower for me and now my tallest palm tree aside from my washingtonia.

[greekpalm]

Hi,

There are some in Ibiza island, Spain, at 38°52'43,05" N, 1°22'22,44" E.

Sorry no photo!

salut.

gilles do you know how old or how tall those roystoneas are ?

[gilles06]

Hi Greekpalms,

The palms are at least 5m tall, you can have a look at google earth but the picture isn't very good.

Salut.

[MOlivera]

There is one growing in Flagler Beach Florida, approximately 20 miles north of Daytona Beach. It has approx. 20-25 feet of trunk. I don't know how long it's been there but I estimate its been there for at least 7 or 8 years. I will post a picture of it later. It's located on the barrier island. There were two other ones I saw on the mainland approx. 2 miles from the beach between Flagler Beach and Ormond Beach. They both had approx. 30 ft of trunk but the 2009 and 2010 winters either killed them both or they looked so bad the owners had them pulled out and replaced with a Phoenix canariensis.

[DeletedAccount14e83d09a24f]

Where have you seen the Northernmost/Southernmost Roystonea Regia ?? Without any protection, of course. 

I have seen those ones in Malaga at 36º45'N (although Málaga has hundreds of R. Regias and Oleraceas)

And this one in Almuñecar, at about 36º50'N:

Also I have heard (and seen photos) about Roystoneas in Alicante (38º21'N) and Ibiza (38º55'N) but I have to search for the photos because they were from private homes. I've seen photos of them in some Spanish forums.

 

Where have you seen the Northernmost or Southernmost Roystonea? Even it's at a lower latitude of that, because it would be interesting to know the limits where Roystoneas can grow in other parts of Europe, USA, Australia, South Africa... or any other place in the world... 

Edited October 28, 2015 by pRoeZa*

[Stelios]

There was a Royal palm growing in Voula, in Athens Greece which I remember from some older topic. It was growing on the sidewalk in front of a house and I remember it was very healthy. The latitude for Voula it must be about 37º84'N.

[DeletedAccount14e83d09a24f]

There was a Royal palm growing in Voula, in Athens Greece which I remember from some older topic. It was growing on the sidewalk in front of a house and I remember it was very healthy. The latitude for Voula it must be about 37º84'N.

wow! Impressive mate, thx for sharing this information!  

If you find photos please post them here, it would be great to see it. But I think I have seen it too in this forum, and it was green and healthy! And for not writing another post, I've include here the photos that I've found of Roystoneas in the Valencian Community! I'll start from lower to higher latitude.

A couple of R.Regia and a R.Oleracea in San Juan de Alicante, 38º25'N:

Benidorm, 38º 33'N:

And Betera! Inland, about 22km from the coast and at 39º 35'N !!

 

 

 

 

 

[Stelios]

So I guess the winner so far is Betera unless somebody from Italy, Greece or other parts of Spain will show us photos with Royals more north. Or how far south they grow in the southern hemisphere. I made a search here on the forum under "royal palm Athens" and I found some older topic about this palm. I don't know if there is a more updated photo or info.

The palm in the last photo from Betera is amazing! I like the orange color on the crownshaft. I wonder if it keeps this color for many days.

[DeletedAccount14e83d09a24f]

So I guess the winner so far is Betera unless somebody from Italy, Greece or other parts of Spain will show us photos with Royals more north. Or how far south they grow in the southern hemisphere. I made a search here on the forum under "royal palm Athens" and I found some older topic about this palm. I don't know if there is a more updated photo or info.

The palm in the last photo from Betera is amazing! I like the orange color on the crownshaft. I wonder if it keeps this color for many days.

So I guess the winner so far is Betera unless somebody from Italy, Greece or other parts of Spain will show us photos with Royals more north. Or how far south they grow in the southern hemisphere. I made a search here on the forum under "royal palm Athens" and I found some older topic about this palm. I don't know if there is a more updated photo or info.

The palm in the last photo from Betera is amazing! I like the orange color on the crownshaft. I wonder if it keeps this color for many days.

In the USA the northernmost extended ones that I've seen are in San Diego, but also L.A. has in some places (I didn't found anyone on the streets by street view but I found it on forums from users) and also in this forum I think that an user close to San Francisco has one in his garden, but I don't remember very well.

Anyways if is not more at south or more at north that's not a problem! It would be great also to know it's limits in USA, Australia, etc

So anyone reading this, it would be great if you participate too, it would be great to know where it can grow on different zones from the world!

[Rafael]

Thats an interesting thread. 

The cold hardiness of royal palm is not what it has been told.

i can grow bizzies, euterpe edulis, prichardia hillebrandii and dypsis decaryi, but NOT the roystonea, which i was unable to preserve alive at my 9b/10a 42ºN yard.

[DeletedAccount14e83d09a24f]

Thats an interesting thread. 

The cold hardiness of royal palm is not what it has been told.

i can grow bizzies, euterpe edulis, prichardia hillebrandii and dypsis decaryi, but NOT the roystonea, which i was unable to preserve alive at my 9b/10a 42ºN yard.

Bizzie and Euterpes at 42ºN ?  wow that's awesome, that's the same latitude as Barcelona! I would like to know about them!!

Where are located your palms? Vigo in Spain (southernmost Galicia) is at 42ºN latitude and the maximum thing you can see is Syagrus 

[Josh-O]

cool thread!

Rafael, in theory you should be able to grow this palm in your climate.

Do you get a hard freeze from time to time?

[Cluster]

Rafael maybe you were unlucky heheh:), try again!

I think Viana do Castelo might be a candidate http://www.ipma.pt/en/oclima/normais.clima/1981-2010/021/, doubt anyone is trying palms there though:)

Copy the link if it does not open the climate normals:)

Edited October 29, 2015 by Cluster

[DeletedAccount14e83d09a24f]

Rafael maybe you were unlucky heheh:), try again!

I think Viana do Castelo might be a candidate http://www.ipma.pt/en/oclima/normais.clima/1981-2010/021/, doubt anyone is trying palms there though:)

Copy the link if it does not open the climate normals:)

That place is too cold for a Roystonea I think, the climate is almost the same as in Vigo, but vigo is a bit more at the north at about 42ºN. Viana do Castelo is on Northernmost Portugal, right? It says in the Wikipedia that is at 41º42'N latitude. It would be awesome to try one here, but I think that it's too cold for one, also the minimum recordings are too low for a Roystonea; I see in the official chart that in January the average is 14,6/4,9ºC, and in April for example is 18,5/8,8ºC, so a simple cold wave can kill it because until the summer the maximum temperatures don't help very much in the recovery of the plant. I see that December, January, February and March have record lows below the freeze mark, but anyways it worths trying it, and I think that at least Howeas would do it.

[DeletedAccount14e83d09a24f]

So I guess the winner so far is Betera unless somebody from Italy, Greece or other parts of Spain will show us photos with Royals more north. Or how far south they grow in the southern hemisphere. I made a search here on the forum under "royal palm Athens" and I found some older topic about this palm. I don't know if there is a more updated photo or info.

The palm in the last photo from Betera is amazing! I like the orange color on the crownshaft. I wonder if it keeps this color for many days.

Found it! I didn't posted it here because I thought that is dead but I researched a bit on some Spanish forums and it's still alive!

Cambrils, 41º 4' N : (photos after a bad winter, maded in February)

A photo from the winter of 2011... it wasn't looking very good, that winter hit quite hard but... there are photos of 2011 in summer! 

 

And then in January 2014 it was looking like this: https://goo.gl/maps/9PGmRdLbdir way more better than in 2011!

 

Cambrils is located in the Mediterranean coast, it doesn't have an official climate chart but there is an official climate chart of a town a bit in the interior near Cambrils. Cambrils is a bit warmer on winters and the cold waves afect less because it's at the coastline. Here is the link: http://www.aemet.es/es/serviciosclimaticos/datosclimatologicos/valoresclimatologicos?l=9981A&k=cat this city is in the province of Tarragona and it's a bit in the interior, it's quite close to Cambrils. The only difference is that in Cambrils the winters are a bit warmer and the cold waves doesn't affect that much. 

The averages in January are 14,6/5,6ºC and in April it's 21,5/10.1ºC, then in May it's 24.9/13,4ºC and a lot of days in May surpass 28ºC, in April it's common to surpass 26ºC in sunny days. July and August for example have 32,2/20,3 32,3/20,6ºC averages which could help a lot to recover a Roystonea after a cold winter, The average annual temperature is 17,7ºC and in the coldest cold waves the temperature maybe reaches -3ºC, but that's in Tortosa; in Cambrils the minimum average during January is about 6ºC and when severe cold waves hit it maximum goes down to 0ºC for some hours or maybe -1ºC in the hardest ones; because that zone near the sea has Citric cultivars which lose their flowers and became useless that year with temperatures under the freeze line. 

But anyways it's not the best climate for them; in the photos it can be seen that the cold waves affect it.

In the U.S. the northernmost Roystonea that I've seen is in this forum, in Los Altos it was, it's about 37º 31'N, and it's looking awesome

 

Edited October 29, 2015 by pRoeZa*

[Cluster]

Proeza, Viana do Castelo is located in the northernmost place in Portugal that is in the coast (only Moledo is slightly further north but there are no stations:P ), from Google maps it seems to be further north than Barcelona. 

I would be surprised if a Roystonea could survive in Viana do Castelo, but it might be possible, the coldest month does not seem too different from Tortosa, the record low of all time is a bit higher even than Tortosa. If it survived in Cambrils with much luck it might survive in Viana if it could get some size before some harsher freeze:). 

It is kinda funny to see a Roystonea so far in Cambrils^^

Edited October 29, 2015 by Cluster

[DeletedAccount14e83d09a24f]

Proeza, Viana do Castelo is located in the northernmost place in Portugal that is in the coast (only Moledo is slightly further north but there are no stations:P ), from Google maps it seems to be further north than Barcelona. 

I would be surprised if a Roystonea could survive in Viana do Castelo, but it might be possible, the coldest month does not seem too different from Tortosa, the record low of all time is a bit higher even than Tortosa. If it survived in Cambrils with much luck it might survive in Viana if it could get some size before some harsher freeze:). 

It is kinda funny to see a Roystonea so far in Cambrils^^

I think that those +1/1.5ºC more in winter minimums and the hot during springs are the vital factors for the health of the Roystonea in Cambrils. 

The problem is that Spring averages are just too mild in Viana do Castelo due to the Atlantic Ocean influence.

In the Mediterranean sea the temperatures are quite bigger. All the southernmost coast of France is at an higher latitude and the springs and summers are quite hotter. I have a question, could survive a Roystonea in Monaco?   And Cluster do you have heard about any Roystonea in Azores? They would do it nice there.

Edited October 29, 2015 by pRoeZa*

[gilles06]

Hi Proeza,

I remeber the royal from Cambrils!

I think Monaco could be a good place to try also. It is a very special place south facing and protected from the north winds by high cliffs. Menton is also said to be the less cold french city...

Salut

[Phoenikakias]

So I guess the winner so far is Betera unless somebody from Italy, Greece or other parts of Spain will show us photos with Royals more north. Or how far south they grow in the southern hemisphere. I made a search here on the forum under "royal palm Athens" and I found some older topic about this palm. I don't know if there is a more updated photo or info.

The palm in the last photo from Betera is amazing! I like the orange color on the crownshaft. I wonder if it keeps this color for many days.

Here's a more recent one, shot  by Kostas at the end of last summer.

[Stelios]

So I guess the winner so far is Betera unless somebody from Italy, Greece or other parts of Spain will show us photos with Royals more north. Or how far south they grow in the southern hemisphere. I made a search here on the forum under "royal palm Athens" and I found some older topic about this palm. I don't know if there is a more updated photo or info.

The palm in the last photo from Betera is amazing! I like the orange color on the crownshaft. I wonder if it keeps this color for many days.

Here's a more recent one, shot  by Kostas at the end of last summer.

It looks great! They should plant more there in this area.

[Phoenikakias]

Definitely! This particular area has maybe the best microclimate in Attica.

[DeletedAccount14e83d09a24f]

More discoverings in some Spanish forums... 

In Monforte del Cid, 38º26'N, but the most important thing is that is not at coastline, it's 25-30km inland and at 350m altitude!  

Alicante, 38º25'N

And other garden in Alicante:

 

Ibiza Airport, 38º53'N:

There were a couple of photos but they are deleted, anyways there are users who said that they are big and good looking. From the satellite view it can be seen that they are Roystoneas, look at the trunk, it has the "bottle" shape on it. And they are big; the users said that those palms were about 5-7m tall (the photo is from 2010)

 

And then Mallorca, at 39º 35'N. One user has this beauty in his garden:

Mallorca has very different climate zones and microclimates; the airport of Mallorca is located at low altitude and it's by far the coldest zone in the island at less than 300m altitude. The lowest temperature recorded in the city of Palma de Mallorca was -0.1ºC(31.82ºF) in February, in December for example the lowest recorded was 2.5ºC(36.5ºF) , the high averages during January are 15.4ºC(59.73ºF) and the minimum averages are 8.3ºC(46.94ºF) , it has near 3000 hours of yearly sun and the mean annual temperature is 18.2ºC. This climate I think that is perfect for spotting more Roystoneas, as the one on the photo, it looks amazing, and this is in the city, there are places in the island with even warmer microclimates which arrive to 19ºC mean annual temperature and the January averages are like 16/9 and the temperature even never arrived under +0.5ºC, as the lowest recorded in the city was -0.1ºC in 4 February of 2012:  

http://www.aemet.es/es/serviciosclimaticos/datosclimatologicos/efemerides_extremos*?w=0&k=bal&l=B228&datos=det&x=B228&m=13&v=todos

Edited October 29, 2015 by pRoeZa*

[Rafael]

Thats an interesting thread. 

The cold hardiness of royal palm is not what it has been told.

i can grow bizzies, euterpe edulis, prichardia hillebrandii and dypsis decaryi, but NOT the roystonea, which i was unable to preserve alive at my 9b/10a 42ºN yard.

Bizzie and Euterpes at 42ºN ?  wow that's awesome, that's the same latitude as Barcelona! I would like to know about them!!

Where are located your palms? Vigo in Spain (southernmost Galicia) is at 42ºN latitude and the maximum thing you can see is Syagrus 

sorry for my mistake, i am at 40,8º N instead

[DeletedAccount14e83d09a24f]

Thats an interesting thread. 

The cold hardiness of royal palm is not what it has been told.

i can grow bizzies, euterpe edulis, prichardia hillebrandii and dypsis decaryi, but NOT the roystonea, which i was unable to preserve alive at my 9b/10a 42ºN yard.

Bizzie and Euterpes at 42ºN ?  wow that's awesome, that's the same latitude as Barcelona! I would like to know about them!!

Where are located your palms? Vigo in Spain (southernmost Galicia) is at 42ºN latitude and the maximum thing you can see is Syagrus 

sorry for my mistake, i am at 40,8º N instead

40º8'N, still impressive what you have in your garden for this latitude buddy  this in North America is impossible!

 

[Phoenikakias]

At 37.81 N and still I can not grow on long term many of those palms. Ohhh this ocean!

[DeletedAccount14e83d09a24f]

Anyone from the United States ?

[Ben in Norcal]

I'll get back to you in spring. 

[Monòver]

This is my Roystonea today, in La Marina, Elche, 38°07' N.

It is 18 months in this place. Last winter we had one night with 2°C and light frost.

I was totally burned. I think the soil was too dry and it was deshydrated.

This picture is today, with 4 healthy leaves.

And this is last may, opening her first leave after the freeze.

 

[Phoenikakias]

Very good regeneration capability Monrover! But totally burn with only 2 C makes a complete deterrence for me! Was it grown in a greenhouse or in a tropical place, before you bought it? How much would a biger specimen cost? I have heard that a royal becomes cold hardier, when it starts forming a trunk.

[Monòver]

Very good regeneration capability Monrover! But totally burn with only 2 C makes a complete deterrence for me! Was it grown in a greenhouse or in a tropical place, before you bought it? How much would a biger specimen cost? I have heard that a royal becomes cold hardier, when it starts forming a trunk.

i had the same question when isaw my Roystonea and my Dictyosperma burned!

I Bought this two palms last year in a Spanish nursery, in Almeria. They was in a shadehouse and i think they was imported from Costa Rica.

 I think the problem was soil too dry and this palms was too tender.  Because near this palms, but in a moist soil i had Chambeyronia,wodyetia, banana trees, anthuriums,Spathyphillums and wasn't burned.I hope this winter will be better and they will be stronger.

I am woking in a gardening company and i have special price because we are good customer. The price is around 80€.

[DeletedAccount14e83d09a24f]

Very good regeneration capability Monrover! But totally burn with only 2 C makes a complete deterrence for me! Was it grown in a greenhouse or in a tropical place, before you bought it? How much would a biger specimen cost? I have heard that a royal becomes cold hardier, when it starts forming a trunk.

i had the same question when isaw my Roystonea and my Dictyosperma burned!

I Bought this two palms last year in a Spanish nursery, in Almeria. They was in a shadehouse and i think they was imported from Costa Rica.

 I think the problem was soil too dry and this palms was too tender.  Because near this palms, but in a moist soil i had Chambeyronia,wodyetia, banana trees, anthuriums,Spathyphillums and wasn't burned.I hope this winter will be better and they will be stronger.

I am woking in a gardening company and i have special price because we are good customer. The price is around 80€.

Do you have more photos of your garden? I want to see them!

The recovery is awesome, the hot during springs in Spain is seen in the recovery of the Roystonea

[Mr. Coconut Palm]

Proeza, we have some nice looking healthy Royal Palms here in Corpus Christi, Texas.  We are at about 27.7 degrees latitude.  The furthest north growing ones in Texas that I have seen are in Galveston at Moody Gardens, and one in someone's front yard there.  Galveston, I think is at about 29.5 degrees latitude.  The East side of Corpus Christi near the water is what I call a cool to mild Zone 10A Climate, whereas Galveston is a cool 10A Climate.  For comparison, Brownsville at the Southern tip of Texas is a mild 10A Climate, and Ft. Myers, Florida is probably a warm 10A Climate.  It is amazing that we can grow some pretty exotic tropicals here in Corpus Christi, since we are in the center of the continental landmass of North America with no mountain ranges or large bodies of water between us and Canada to protect us from Arctic fronts.  Being this far south though, does moderate Arctic fronts before they get here, but our all time lowest recorded temperature here is 11F and in Brownsville, it is 12F, and in Galveston, it is 8F.  Horrific cold temperatures like that though are once in 100 to 200  year events.

[Cluster]

Hello Proeza I do not know of any Roystonea in the Azores, but it should be quite happy there:). Viana do Castelo has lower lows (during spring and summer only), but the highs are higher than Monaco throughout the year, except late spring and summer where they are equal, being in the ocean though the lowest records are probably not lower than south France. It is probably very hard to work there, but I would give it a try in a good micro-climate:) just to see how it fares.

I will let you know if I find any Roystonea in Azores or northern Portugal! For now the best person to raise one would be Rafael, I believe he might be able to.

Edited November 1, 2015 by Cluster

[Monòver]

Very good regeneration capability Monrover! But totally burn with only 2 C makes a complete deterrence for me! Was it grown in a greenhouse or in a tropical place, before you bought it? How much would a biger specimen cost? I have heard that a royal becomes cold hardier, when it starts forming a trunk.

i had the same question when isaw my Roystonea and my Dictyosperma burned!

I Bought this two palms last year in a Spanish nursery, in Almeria. They was in a shadehouse and i think they was imported from Costa Rica.

 I think the problem was soil too dry and this palms was too tender.  Because near this palms, but in a moist soil i had Chambeyronia,wodyetia, banana trees, anthuriums,Spathyphillums and wasn't burned.I hope this winter will be better and they will be stronger.

I am woking in a gardening company and i have special price because we are good customer. The price is around 80€.

Do you have more photos of your garden? I want to see them!

The recovery is awesome, the hot during springs in Spain is seen in the recovery of the Roystonea

My garden is too small and new. I started last year and every plants are small.

And this post is for Roystoneas, but early i will post pictures from my garden.

[DeletedAccount14e83d09a24f]

My garden is too small and new. I started last year and every plants are small.

And this post is for Roystoneas, but early i will post pictures from my garden.

Waiting for them

[Pargomad]

 

The northernmost roystoneas in Portugal I know are in Lisbon, in a park just next to the Vasco da Gama bridge. There are 3 exemplars in good shape. I Also know that the Algarve has some exemplars too, much more common than in Lisbon. 

For the Azores question I've never seen any roystonea on pictures there, unlike Madeira, the Azores seem empty of tropical species.

[DeletedAccount14e83d09a24f]

On 18/12/2015 19:18:31, Pargomad said:

The northernmost roystoneas in Portugal I know are in Lisbon, in a park just next to the Vasco da Gama bridge. There are 3 exemplars in good shape. I Also know that the Algarve has some exemplars too, much more common than in Lisbon. 

For the Azores question I've never seen any roystonea on pictures there, unlike Madeira, the Azores seem empty of tropical species.

I've done some Street View in Açores and I've seen an Archontophoenix Alexandrae in a private garden. It was good looking :)