Hoar frost and palms

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Adrian Brattle

Hoar frost and palms

Post by Adrian Brattle »

Cold hardness of palms varies from climate to climate.

For example hardiness of Phoenix canariensis_CIDP in a dry arid climate is -10C. In most parts of the UK is -6C due to saturated air and high dew points, developing strong hoar frost. so if you protect it from hoar frost you may get away with -8C or -9c. so most places in UK is not the low temperatures but the strong hoar frost.
GoggleboxUK

Re: Hoar frost and palms

Post by GoggleboxUK »

Well speak of the devil!

We thought you'd been abducted by aliens but it looks like you were just in hibernation.

:lol:
Tom2006
Posts: 8094
Joined: Thu Sep 30, 2010 11:23 am
Location: East Yorkshire UK

Re: Hoar frost and palms

Post by Tom2006 »

It's also to do with daytime rebound in temp.
Most wanted list - Any Young Trachycarpus and/or fern.
Nathan

Re: Hoar frost and palms

Post by Nathan »

And the size of the plant of course... icon_thumright
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eddie
Posts: 1088
Joined: Tue Dec 02, 2008 6:29 pm
Location: The Hague NL Zone 7a

Re: Hoar frost and palms

Post by eddie »

Adrian Brattle wrote:Cold hardness of palms varies from climate to climate.

For example hardiness of Phoenix canariensis (Phoenix canariensis_CIDP) in a dry arid climate is -10C.
So I try to make my own dry climate. I've made my coldframes closed, with bubble wrap as isolation, along with plastic buildingfoil. Inside a lightstring around the palm. At the strong frostnights temps inside are around 10C or more higher, but also the relative humidity is lowered to around 30%. The coldframe went down to -2.3C at ground level, so no worries with a Rh of 30%. Ouside was -12C and 65%

At the moment I've switched the lights on, just to give the palms some warm days. Temp + 16.3 C at 30% Rh. Desert conditions icon_thumleft
Washingtonia Trachycarpus Cordyline? Bamboos Olive tree? Bananas
Adrian Brattle

Re: Hoar frost and palms

Post by Adrian Brattle »

eddie wrote:
Adrian Brattle wrote:Cold hardness of palms varies from climate to climate.

For example hardiness of Phoenix canariensis (Phoenix canariensis (Phoenix canariensis_CIDP)) in a dry arid climate is -10C.
So I try to make my own dry climate. I've made my coldframes closed, with bubble wrap as isolation, along with plastic buildingfoil. Inside a lightstring around the palm. At the strong frostnights temps inside are around 10C or more higher, but also the relative humidity is lowered to around 30%. The coldframe went down to -2.3C at ground level, so no worries with a Rh of 30%. Ouside was -12C and 65%

At the moment I've switched the lights on, just to give the palms some warm days. Temp + 16.3 C at 30% Rh. Desert conditions icon_thumleft
In Newcastle during the last cold snap temps got down to -7C for one night, two nights of -6C,
RH of 100% for all nights, Dew point -6C to -7C. icon_thumbdown
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