If they did a study here, mine will be zone 13 with 365 days a year above 30°C and crimson in colour Dirtmechanic zone 8 looks like a nice place to live Looking at this chart now I can understand why some veggies grow well in zone 12 and I either can't grow them or they just do badly
Welcome to the Hot Side. I wish more plants have upper limits indicated in addition to the USDA grow zone lower limits. Or climate preferences too. On paper I should be able to grow eucalyptus in the yard but we have that continental influence on our weather.
Frankly my dear, I do not know. I'm in Norway, a bit north of Anchorage Alaska, but we have the Gulf stream so we can't compare directly climate wise either, but an educated guess should be zones 7 to 8. I can't even use the European scale because they have it the wrong way around. My H2 is their H4. Yay...
A 3, so great for cole crops, but need microclimates in the yard to grow warm weather crops….. but that is changing.
Many naps have us in zone 8 but it is getting closer to 9, and the past few years our summers have been closing in on 10. I live in what is referred to as a 'heat island' since the heat created by people and traffic in Dallas drifts up here and hangs around for hours, most days well past sundown making it more like zone 9 to 10 most summers. So basically I do not plant according to the heat zones, I go with what I know will grow for me in Black Clay and 100+ temps from March through "August.
So zone 8 is 90-120f but I have personally measured 125f on droughty dried grass with a handheld noncontact thermometer. I think it may be a good idea to not get too close to the edge no matter what you are doing, like a heat zone included. I play the usda grow zones that way too, since plants just struggle or worse, which means they absorb moretime and energy for needed care and context.
The map shows me in either zone 3 or 4. I think, zone 3. However, it looks like the date for the map is 1997. It probably summarized data from decades previous to that. With my bad eyesight, I'm not certain. I can say for certain it's warmed up a lot in many places in the US since then. This year we had a week of temperature above 115. People keep telling me, that's a fluke, it's historic, it will never happen again. Regardless, it was a much hotter year. As a result, I had great crops of sweet corn, beans, tomatoes, peppers, but my apples were mostly sunburnt and ruined, and my figs did poorly due to sunburn on the baby figs. Persimmons, plums, peaches did well. We did have beautiful Kalanchoes this year. Four O'clocks bloomed like crazy. Marigolds, too. Plantmaps.com has some interesting maps. https://www.plantmaps.com/index.php However, I advise caution. My area is listed as 1 day over 86 annually. I think it's been a lot more than that for several years. @Dirtmechanic, did you look into Alpine Yellow Gum or Tasmanian Eucalyptus? Mine is doing fine. Fast grower. It should tolerate more cold due to its provenance. Also as far as I know, it's not an exploding gasoline eucalyptus like the glue gum type.
