TrachyCarpus and Chamaerops humilis are great palms for England. Your right they do not need much heat.
Here its to warm for them with the amazing like Vietnam (Example) humidity.

In your area you had some extreme heat waves over the years. Our highest was 41C and humidex 58C

I think you do experince humidity but its not to bad.
Here I have to worry about winter spring summer fall for palms.

Smaller plants do die more in the cold than larger palms so I would plant a bigger one
so it will have more cold hardiness.Small ones I would build a greenhouse for them.

Arkansas is like in the south central of the united states and they get amazingly hot there.
Some places average summer is like 34C.Afghanistan has temps around 40C all summer. 😯
but its dry heat. So get one because you will be happy 😀

I hope you do have hot summer and also for me so I don't lose more plants. I still lost now $1000.00 worth of plants
do to my crappy climate and hardiness zone.

The have to sell trachys for england because its one of the best palms for their climate.Chamaerops humilis
is great too. So get one 😀

I had already a few Trachys in Germany. I lost also some of them but one finally exceeded the roof of the garage and the crown was visible from the street.

I read that Trachys would even tolerate frozen roots. It might be not that hardy in regard of extreme temperatures, but that's a factor more important in North America where very cold freezes occcur for a limited time.

In continental Europe it's usually not getting that cold but the cold lasts for a longer period. Overall, if day temperatures reach only the freezing point. That's where Trachys are good at.

Second point is that they can cope with hot summer temperatures but don't need them to grow.

The Chamaerops humilis struggles with the winter cold in Germany but that's not relevant for England. Instead, against popular belief it can cope very well with wetness in the winter time. Southern Italy and many other regions in the Mediterranean have their rainfall mostly during winter. Prolonged freezes with day temperatures below the freezing point are almost not existing even here in the Pennines in Yorkshire.

The first Chamaerops I planted here in Yorkshire is in the shade and gets in summer only two hours of sunshine. I dared to plant it there because I saw in Southern France once a Chamaerops that grew entirely in the shade without any beam of sunshine at all and was also big and bulky.

Our first Chamaerops had never any protection and made never any problems. But it wasn't blooming in all that 8 years. Another Chamaerops that I planted this April in a very sunny spot started blooming two weeks later. 🙂

It looks like that's an adaption from the ice ages that Mediterraniean plants also grow with cooler temperatures. In our garden are rosemary and laurel thriving and thyme is even bloomimg now. All plants that are not completely hardy in Germany but here they grow like weed ... what they are actually. 8)

I bought a mini-greenhouse for the Sabal and ventilated mini-shelters for the Nannorhops from the nearby garden market and think that was a good investment.

Now, it is raining since a few days with flooding alerts in some regions nearby. It is noon now and the temperature is 51.5 °F. 😯 Reykjavik in Iceland has already 52.8 °F and Nome, Alaska, on the Bering Street will get highs from 55 °F to 70 °F, today. 😆

The calendar says it is summer, but even for a traditional British summer it is somewhat cold. I hope the weather will improve sometimes. We got now an exceptional cool spring since May.

If weather won't improve I see myself looking for some heating. 😆

"Oh, you got a Sabal and Nannorhops. Do they need shelter and heating during the winter?"
"No, not during winter, only during summer ..." 😯
😆 😆 😆

Hi,

it's me again posting out of the fridge ... 😯

It's now 3 months ago that the weather turned unusually cold. Since then the day time temperaures reached 70°F on a very few days but it was generally around 60°F. Many days, like today, there has beeen only rain with around 55°C degrees. Today, at 11 am it is exactly 55°F. The polar bears in northern Alaska might enjoy such a weather but for the Sabal and the Nannorhops that is simply not a summer as even the mini-greenhouses are pretty much useless without at least a little bit of sunshine.

Serbia and Greece have now their second heat wave with temperatures reaching really 120°C but it looks like that Britain will never get only a little bit of this.

So, I decided to heat the mini-greenhouse (4 feet high) for the Sabal at least in summer to about 85°C during the day.

But I was wondering what to do with the Nannorhops. I am now convinced that they are completely inadaquate for our climate. During winter to wet and during summer simply to cold. I thought that after the warm winter we would get warmer summers, too. But this summer is in contrary extremely cool. As I mentioned already all our mediterranian plants do very well in this cold summer. That's astonishing as roses and even the Dicksonia tree fern don't grow much this year.

Now my question: 😆

Is there anyone living in a climate zone like me who has done anything useful with Nannorphopses? I only see them getting sold as seedling and then you hear never again anything from them. Do they all perish? 😯

Does anyone have them at home behind a window or in a conservatory? Would they grow at least a little in a house that is not heated during summer, only at night but not during teh day when it's inside 70°C?

Mainly, I am concerned how much energy does it cost to grow these Nannorhops and if it's worth the effort.

You have had a tough year over there so far, hope you haven't been affected by the recent flooding !
I would be inclined to try the Saba l/ Nannorrhops in a full sun position with a dark rock mulch to gain a few degrees.

One that might do well for your climate is Rhopalostylis sapida , also Juania australis , These are a couple I wish it was possible for me to grow here 🙂

Steve

You have had a tough year over there so far, hope you haven't been affected by the recent flooding !
I would be inclined to try the Saba l/ Nannorrhops in a full sun position with a dark rock mulch to gain a few degrees.

We live on a mountain slope in the Pennines, so flooding shouldn't be a problem. I only was by chance last Saturday in Tewkesbury. Wrong time, wrong place. Fortunately, I drove our old Citroën car with a hydraulic suspension that you can lever and with a Diesel engine. So I could pass some flooded roads where only trucks could pass. I needed half an hour to find an exit from that flooded town that is now completely cut off. 😯

The Nannorhops are in full sun from morning to evening but that doesn't help much if there isn't any sunshine for a week or so.

I'm only thinking to build a small stationary greenhouse around them that would have more than 85°F inside at least until the necessary amount of leaves have come out. I only have to check how costly that would be.

I know this from Cycas revoluta. If it is only hot enough they start to grow like crazy. Otherwise they look like dead. Only I misjudged those Nannorhops. As I got only mediterranean plants in the garden that grow with every weather, even this year, I didn't think much about summer temperatures. I was only focussed on winter temperatures as most people are who plant hardy plants. 😐

With the rising cost of gasoline I wish I had a Citroën 🙂

Would a boost in soil temps do the trick? Maybe a couple heating cables that could serve as insurance during the Winter months?

Just a thought, the greenhouse also sounds like a good option.

Would a boost in soil temps do the trick? Maybe a couple heating cables that could serve as insurance during the Winter months?

This concerns me, too. Presumably, only heating the air with bulb isn't enough. The heat of the air won't penetrate much in the soil. But what I don't know is what is important for the palm to grow: hot air, a warm soil, or both?

I would think a warm enough root zone and then sun & moisture
Not sure if this can be extrapolated to Palms? ~ Link is to a study involving a monocot that suggest the ideal soil temp would be 25C

http://www.blackwell-synergy.com/doi/abs/10.1111/j.1469-8137.1992.tb01804.x

EDIT - Changed Dicot to Monocot ~ been too hot here today to think clearly 😆

Interesting article. Thanks.