Zònn climatich USDA
I zònn climatich USDA hinn di zònn che ‘l territòri el ven dividùu al fin de juttà in la scèrna di piant che pòden vèss miss giò in giardin. El territòri l’è dividùu in zònn a segonda de la temperadura mìnima.[1]
| Zòna | da | a | |
| 0 | a | < −53.9 °C (−65 °F) | |
| b | −53.9 °C (−65 °F) | −51.1 °C (−60 °F) | |
| 1 | a | −51.1 °C (−60 °F) | −48.3 °C (−55 °F) |
| b | −48.3 °C (−55 °F) | −45.6 °C (−50 °F) | |
| 2 | a | −45.6 °C (−50 °F) | −42.8 °C (−45 °F) |
| b | −42.8 °C (−45 °F) | −40 °C (−40 °F) | |
| 3 | a | −40 °C (−40 °F) | −37.2 °C (−35 °F) |
| b | −37.2 °C (−35 °F) | −34.4 °C (−30 °F) | |
| 4 | a | −34.4 °C (−30 °F) | −31.7 °C (−25 °F) |
| b | −31.7 °C (−25 °F) | −28.9 °C (−20 °F) | |
| 5 | a | −28.9 °C (−20 °F) | −26.1 °C (−15 °F) |
| b | −26.1 °C (−15 °F) | −23.3 °C (−10 °F) | |
| 6 | a | −23.3 °C (−10 °F) | −20.6 °C (−5 °F) |
| b | −20.6 °C (−5 °F) | −17.8 °C (0 °F) | |
| 7 | a | −17.8 °C (0 °F) | −15 °C (5 °F) |
| b | −15 °C (5 °F) | −12.2 °C (10 °F) | |
| 8 | a | −12.2 °C (10 °F) | −9.4 °C (15 °F) |
| b | −9.4 °C (15 °F) | −6.7 °C (20 °F) | |
| 9 | a | −6.7 °C (20 °F) | −3.9 °C (25 °F) |
| b | −3.9 °C (25 °F) | −1.1 °C (30 °F) | |
| 10 | a | −1.1 °C (30 °F) | +1.7 °C (35 °F) |
| b | +1.7 °C (35 °F) | +4.4 °C (40 °F) | |
| 11 | a | +4.4 °C (40 °F) | +7.2 °C (45 °F) |
| b | +7.2 °C (45 °F) | +10 °C (50 °F) | |
| 12 | a | +10 °C (50 °F) | +12.8 °C (55 °F) |
| b | > +12.8 °C (55 °F) | ||
Riferiment Modifega
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