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Tropical plants that have survived the winter zone 9b/9a


Gius

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Hi everyone, I have a question, I live in italy in zone usda between 9b and 9a, in winter we have some cold nights in the high-mid 20's but some years also in the low 20's.

Can these plants survive here in a sheltered spot? has anyone tried these plants in the same zone before?

Monstera deliciosa/adansonii

syagrus romanzoffiana

brugmansia

strelitzia reginae

ficus pumila

ficus elastica (survived with no damage at 30f)

philodendron selloum (no damage at 28f)

schefflera arboricola

abutilon victor-reiter

eucalyptus leucoxylon

thank you for the answers!

 

 

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I grew Strelitzia reginae, and Philodendron selloum, in Davis California, which was zone 9b.  I also saw Syagrus romanzoffiana grown.  And bougainvillia was grown on the the south sides of houses.

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On 11/10/2020 at 11:58 AM, Gius said:

Monstera deliciosa/adansonii - yes, climbing ones burned back at 25F but regrew.

syagrus romanzoffiana - yes, cold hardy to mid 20s with no damage, some damage low 20s, probably dead under 20F

strelitzia reginae - yes, some burn around 25F

ficus elastica (survived with no damage at 30f) - I am trying it here, but in a sunny spot in Gainesville FL they grow to a tree.  Will regrow if badly burned, just cut it to the ground.

philodendron selloum (no damage at 28f) - burned badly at 25F but regrew fast.

Hi Gius, Welcome to Palmtalk!  I edited your list with ones that I know about.  Here in the Orlando, Florida area we get brief cold fronts.  So the above damage estimates might change if you are at 25F for 4, 5, or 6 hours or more.  Usually here we get 1 hour really cold, but with a rapid warmup as the sun rises.

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Every single one of these plants survives such cold back in San Jose ( CA. ) Some are much more widely planted than others however.  While many neighborhoods/parts of town might be warmer most of the time, the area there would average zone 9b overall but has experienced colder spells during a given winter, every so many years in the past.

As Merlyn mentions, the duration the plants experience -below X threshold- is more important than anything..  an hour or two where temperatures are below say 28F ( -2.2C ) will do less damage than if the same plant(s) experiences 6-8 hours of the same cold.  Any shelter that buffers X plant from extreme cold will help as well.. Keeping the plants as healthy as possible will also factor into how well they can tolerate a few nights of extra cold during an otherwise normal winter.

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Hi Gius,

I would say all are ok. But the 2 ficus will suffer under -5C...

Salut.

07690.gif

elevation 328 feet

distance from mediteranean sea 1,1 mile

lowest t° 2009/2010 : 27F

lowest t° 2008/2009 : 33F

lowest t° 2007/2008 : 32F

lowest t° 2006/2007 : 35F

lowest t° 2005/2006 : 27F

lowest t° 2004/2005 : 25F

Historical lowest t° 1985 : 18F

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