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Thrinax radiata


Jim in Los Altos

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My Very Slow Growing T. radiata in the ground from a one gallon three years ago and barely half a foot tall did well in this freeze with some minor spotting. Minimum was 26.5F with several upper 20s nights as well. :)

Jim in Los Altos, CA  SF Bay Area 37.34N- 122.13W- 190' above sea level

zone 10a/9b

sunset zone 16

300+ palms, 90+ species in the ground

Las Palmas Design

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Las Palmas Design & Associates

Elegant Homes and Gardens

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  • 2 months later...

This palm was in a 7 gallon pot and planted out in January 2007.  There was some slow to appear cold damage to one leaf in particular.  

The "official" air temperature on my weather station (at about 4-5 ft above ground ) was 34F.  But, due to the still air, I measured 29F at ground level.  

This palm was in the open and not exposed to frost.   Another T. radiata which has been in the ground since Feb 2006 was not damaged in the least.  This damaged palm was also shade grown (and thus planted out in full sun).  So, I suspect that this palm was a little weak from the recent planting and this contributed to the damage at a relatively high temperature.

Palms_18-3.jpg

Larry 

Palm Harbor, FL 10a / Ft Myers, FL 10b

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  • 9 months later...

Went below 32F at 330am, went back above 32F by 830am. 5 total hours of freezing temperatures. Ultimate low of 29.7F with 7.6 "freezing degree hours" calculated as discussed in the weather forum. Moderate winds varying from NNW to NNE all night, dewpoints in low teens, no frost. No overhead canopy in my yard. No protection provided. Photos from 1 day after the freeze event.

No damage from this event. Is in the middle of a dense planting.

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No damage still at 4 days after freeze.

Parrish, FL

Zone 9B

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  • 1 year later...

All of mine (which range from 4-6 ft OA) were undamaged from 35.0F, 33.5F, 35.8F in 1/2009. No frost on leaves.

Larry 

Palm Harbor, FL 10a / Ft Myers, FL 10b

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I'm glad to hear these are making appearances in Cali. They are such cute little palms. I accidently left my potted seedlings out in a brief 30 degree freeze but they were already pissed off from being in north FL, so I think they just hated me a little bit more. They recovered and I let them retire to Pompano Beach. My theory is they need hot sun in the winter.

092108001.jpg

Jay

Tallahassee, FL USDA Zone 8b

Elevation: 150 ft.

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I have a small plant about 1ft tall. It was exposed to two nights at 32 and one at 34. The last two with frost. No damage at all.

With a tin cup for a chalice

Fill it up with good red wine,

And I'm-a chewin' on a honeysuckle vine.

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  • 11 months later...

I have 2. The one under a Delonix Regia has no visible damage (no frost formed on it). The one on the open had some frost on it, it shows some damage, but the Dypsis lutescens next to it shows a lot more damage (both palms are about 2 1/2 feet overall).

Jeffrey

Apollo Beach, FL

zone 9b/10a

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I have two...the taller one on the south side of my house got burned but the smaller one on the north side did fine...go figure.

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The weight of lies will bring you down / And follow you to every town / Cause nothin happens here

That doesn't happen there / So when you run make sure you run / To something and not away from

Cause lies don't need an aero plane / To chase you anywhere

--Avett Bros

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My one Thrinax has showed burning in the past week. It is under 4 large Queens, so I thought it would be a perfect place. Only the newest leaf looks good. It is 5 ft tall and 3 years planted. Again, 4 nights below freezing but that one last night was below 32F in the back yard for about 10+ hours with solid ice in buckets...Greg :huh:

Begonias are my thing. I've been growing and selling them for three decades, nearly two in Tampa Bay. NPR is an bhour N of St Pete, coast

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Mine is about 5' and is part of a palm thicket, with some canopy overhead. It's unfazed, no frost, temperature as low as 28 (early in the evening, whole night close to freezing, then 29 at dawn).

Fla. climate center: 100-119 days>85 F
USDA 1990 hardiness zone 9B
Current USDA hardiness zone 10a
4 km inland from Indian River; 27º N (equivalent to Brisbane)

Central Orlando's urban heat island may be warmer than us

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Here are two T. radiata's, photographed 2 weeks after cold. You can see yellow at the bottom of the top:

P1020472.jpg

What you look for is what is looking

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  • 2 years later...

Mine grows in a pot, almost 3' tall, went through a very tough and persistently cold winter with severeal weeks in a row with temperatures steadily below 53F and many days where daytime highs never passed 46F, but NO freezing, the lowest night temperature monitored at around 34F, finally was completely defoliated, but its spear appears to be OK. In previous winters, when we had similar lowest temps for a couple of nights but a much warmer overall average, it didn't have any problem. So it needs some warm weather every now and then to keep going or else it enters the danger zone, even without a true freeze event.

Paleo Faliro, coastal Athens, Greece

Lat 37° 55' 33" N - Lon 23° 42' 34" E

Zone 9b/10a, cool winters, hot summers, coastal effect

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