Re: Is it possible for a dwarf cavendish to survive 9a zone?
To compute USDA cold hardiness zone at your location:
0. I recommend a spreadsheet.
1. For the past ten years between each winter solstice and spring equinox, find the lowest temperature each day that lasted for 4 or more hours. That's about 890 values.
2. Average them.
3. Look up your zone on the USDA cold hardiness chart.
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