Rankings · Gardening

The warmest plant hardiness zones

Plant hardiness zone.

This measure has no better end. The order describes the states, it does not rank them — see the other direction.

Average coldest winter temperature over the past 15 years, expressed as a plant hardiness zone. This is the standard measure of what will survive a winter outdoors. Computed from station observations using the USDA band definitions rather than taken from the USDA map, whose data is not published for reuse — it should agree in most places, but a county spanning a mountain range varies inside itself more than one number can show.

  1. 1HawaiiZone 9b
  2. 2FloridaZone 9b
  3. 3CaliforniaZone 9a
  4. 4LouisianaZone 8a
  5. 5TexasZone 8a
  6. 6OregonZone 8a
  7. 7ArizonaZone 8a
  8. 8GeorgiaZone 8a
  9. 9AlabamaZone 8a
  10. 10South CarolinaZone 8a
  11. 11North CarolinaZone 8a
  12. 12MississippiZone 7b
  13. 13NevadaZone 7b
  14. 14WashingtonZone 7b
  15. 15District of ColumbiaZone 7b
  16. 16ArkansasZone 7b
  17. 17VirginiaZone 7b
  18. 18TennesseeZone 7b
  19. 19MarylandZone 7a
  20. 20DelawareZone 7a
  21. 21New JerseyZone 7a
  22. 22OklahomaZone 7a
  23. 23New MexicoZone 7a
  24. 24KentuckyZone 7a
  25. 25West VirginiaZone 7a
  26. 26PennsylvaniaZone 7a
  27. 27New YorkZone 6b
  28. 28Rhode IslandZone 6b
  29. 29ConnecticutZone 6b
  30. 30MissouriZone 6b
  31. 31OhioZone 6b
  32. 32UtahZone 6b
  33. 33IdahoZone 6b
  34. 34MassachusettsZone 6b
  35. 35KansasZone 6b
  36. 36IndianaZone 6b
  37. 37MichiganZone 6b
  38. 38New HampshireZone 6a
  39. 39IllinoisZone 6a
  40. 40ColoradoZone 6a
  41. 41MaineZone 6a
  42. 42AlaskaZone 6a
  43. 43VermontZone 6a
  44. 44NebraskaZone 5b
  45. 45WisconsinZone 5b
  46. 46IowaZone 5b
  47. 47WyomingZone 5b
  48. 48MinnesotaZone 5a
  49. 49MontanaZone 5a
  50. 50South DakotaZone 5a
  51. 51North DakotaZone 5a
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<iframe src="https://movermath.com/embed/garden-zone" width="100%" height="420" style="border:0" loading="lazy" title="Plant hardiness zone by state"></iframe>

Source: NOAA RCC-ACIS, USDA band definitions. · How this is built