Plants for High Temperatures

SlapSlapSlappy

Okay, so I read that over 86F plants start to stress out. For most of the year, my state is in temperatures over 86F.

I live in Peoria, Arizona (USA)


The USDA Plant Hardiness in my area is 9.
My AHS heat zone is 11.

The winters are weird beause during the day, it's pretty warm. It's really cold at night though, here is an example of what it would be like November to March:

November
Average high temperature: 75
Average low temperature: 48
Warmest ever: 93
Coldest ever: 25
Average precipitation: .6


December
Average high temperature: 66
Average low temperature: 42
Warmest ever: 88
Coldest ever: 22
Average precipitation: .9


January
Average high temperature: 66
Average low temperature: 41
Warmest ever: 88
Coldest ever: 17
Average precipitation: .8


February
Average high temperature: 70
Average low temperature: 44
Warmest ever: 92
Coldest ever: 22
Average precipitation: .6


March
Average high temperature: 75
Average low temperature: 49
Warmest ever: 100
Coldest ever: 25
Average precipitation: .9

It gets really warm in the summer though with the high being 113F in June/July and the lows being around 80. I think the hottest times would be around 120 degrees in the summer.

Are there any plants that can comfortably live outside in my area?? Thanks!

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bisjoe

As long as you water enough, provide shade on the hottest days, and protection when it gets close to freezing, any trees native to your area should
be fine. Seems like many of us in cooler climates would love to be able to grow mesquite bonai.

Also, tropicals that can take the 40s like Bougainvillea, and even ficus should grow outdoors there with the same care as I mentioned above. There may be some suffering below 50 but they should be hardy to 40.

SlapSlapSlappy

So it wouldn't be a problem if the temperature radically changes throghout the day? I don't want to put them into a false sense of dormanc, and then have them change during the day again...

AndyWilson

They should be fine, think of where trees like this grow and you can get quite a variety. African and australian natives are good for your high temps. Things like acacia and african olive will handle those temps with ease. I am bordering zone 11 and have black pines, trident maples, chinese elm and many of the more common trees, the key is adapting and keeping them out of midday sun. And having a more retentive soil mix

PatArizona

Also...keep in mind that MIDDAY SUN starts before 10:00am in the Arizona dezert...

Pat

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pup

Here in Perth southern suburbs we have had 40.7% 41% 42 %. Tomorrow is expected to be cooler at 36% all of my trees are well. I have just had to water more. I also put up a shade barrier. 50 per cent shade cloth. Even the conifers.

__________________
PUP
Advanced begginner


Heatzone USA9/10
Aus 3/4

pup

As at 2-45 pm 26th Dec 44% Celsius quite warm.

__________________
PUP
Advanced begginner


Heatzone USA9/10
Aus 3/4

SlapSlapSlappy

Thanks for the replies everyone.

RobertJBaran

Please also see http://www.phoenixbonsai.com/PPlants.html and linked pages for empirical information collected over the years in Maricopa County by the Phoenix Bonsai Society.

Cordially,

Robert J. Baran
Webmaster