Palm Tree Cold Hardiness Zone Map

The USDA Hardiness Zone Map is a map with regions defined by a 10 degree Fahrenheit difference in the average annual minimum temperature. This map divides North America into 11 separate zones. The higher the zone number, the warmer the area.

Information from the zone map helps gardeners to compare their garden climates and determine what plants will grow in their area. Keep in mind, this map only shows average annual minimum temperatures and doesn’t take into consideration important factors like soil types, rainfall, daytime temperatures, day length, wind, humidity and heat.

Those factors are very important and play a key role in healthy palm growth and development. Knowing your hardiness zone is just not enough. A good example would be Portland, OR and Austin, TX. Even though they are both located in the Zone 8, their climates are dramatically different.

USDA Plant Hardiness Zone Map

This map was created by Arbor Day Foundation who has recently completed an extensive updating of U.S. Hardiness Zones based upon data from 5,000 National Climatic Data Center cooperative stations across the continental United States.

Find your hardiness zone

[field name=zone]

Palm Trees by State

Find out what palm trees can grow in your state:

State Zones State Zones
Alaska Palm Trees 1 – 7b
Montana Palm Trees 2a – 6a
Alabama Palm Trees 7a – 8b Nebraska Palm Trees 4a – 6a
Arizona Palm Trees 4b – 10a Nevada Palm Trees 4a – 9b
Arkansas Palm Trees 6a – 8b New Hampshire Palm Trees 3a – 6a
California Palm Trees 4a – 10b New Jersey Palm Trees 5a – 7b
Colorado Palm Trees 2b – 6b New Mexico Palm Trees 3b – 8a
Connecticut Palm Trees 5a – 7a New York Palm Trees 3a – 7b
Delaware Palm Trees 6b – 7b North Carolina Palm Trees 5b – 8b
Washington DC Palm Trees 6b – 7b North Dakota Palm Trees 2b – 4b
Florida Palm Trees 8a – 11 Ohio Palm Trees 5a – 7a
Georgia Palm Trees 6b – 9a Oklahoma Palm Trees 5b – 8a
Hawaii Palm Trees 10a – 11 Oregon Palm Trees 3b – 9b
Idaho Palm Trees 2b – 7a Pennsylvania Palm Trees 4b – 7b
Illinois Palm Trees 4a – 7a Rhode Island Palm Trees 5b – 7a
Indiana Palm Trees 5a – 6b South Carolina Palm Trees 6b – 9a
Iowa Palm Trees 3b – 6a South Dakota Palm Trees 3a – 5b
Kansas Palm Trees 5a – 6b Tennessee Palm Trees 5b – 7b
Kentucky Palm Trees 5b – 7a Texas Palm Trees 6a – 10a
Louisiana Palm Trees 7b – 9b Utah Palm Trees 3a – 8b
Maine Palm Trees 3a – 6b Vermont Palm Trees 3b – 5a
Maryland Palm Trees 5a – 8a Virginia Palm Trees 5b – 8b
Massachusetts Palm Trees 4b – 7b Washington Palm Trees 4a – 9a
Michigan Palm Trees 3a – 6b West Virginia Palm Trees 5a – 7a
Minnesota Palm Trees 2a – 5a Wisconsin Palm Trees 2b – 5a
Mississippi Palm Trees 6b – 8b Wyoming Palm Trees 2a – 5b
Missouri Palm Trees 4b – 7a

Applying zone references

In the palm profile you might have seen reference to zone or range of zones. If a palm is hardy to zone 7, that means it can withstand lowest temperatures of that zone. If there is a range of zones like 7-10, that means it can grow only in those zones and will not tolerate colder or warmer temperatures.

Microclimate

If you live in a microclimate, that is an area with slightly different climate from a general climate of a region, then you might be able to grow more/less palms in your garden. Even within a city, a street, or a spot protected by a warm wall in your own garden, there may be microclimates that affect how plants grow.

USDA Zones

Here is a list of zones with avg. annual low temperatures:

  • Zone 1: below -50 F (below -46 C)
  • Zone 2: -50 to -40 F (-46 to -40 C)
  • Zone 3: -40 to -30 F (-40 to -34 C)
  • Zone 4: -30 to -20 F (-34 to -29 C)
  • Zone 5: -20 to -10 F (-29 to -23 C)
  • Zone 6: -10 to 0 F (-23 to -18 C)
  • Zone 7: 0 to 10 F (-18 to -12 C)
  • Zone 8: 10 to 20 F (-12 to -7 C)
  • Zone 9: 20 to 30 F (-7 to -1 C)
  • Zone 10: 30 to 40 F (-1 to 4 C)
  • Zone 11: above 40 F (above 4 C)

~Susan Brian

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