|
|
Home 
Growing Zone Maps
Definitions of Frost & Freeze _ US Frost Dates
Frost32 ° F This is also referred to as a 'lite' freeze.Damage depends upon the frost's duration, topography, humidity, etc...
Moderate Freeze29 °F to 32 °F 'Killing Frost'Tender plants are killed with little effect on other vegetation.
25 °F to 28 °F
Severe Freeze24 °F and colderThere is heavy damage to all but the hardiest of plants.
United States Average Zone Frost DatesZone 1Average date of the first frost - July 1 to July 31Average dates the last frost - June 1 to June 30 Note: This zone is vulnerable to frost 365 days per year
Zone 2Average dates first frost - August 1 to August 31Average dates the last frost - May 1 to May 31
Zone 3Average dates first frost - September 1 to September 30Average dates the last frost - May 1 to May 31
Zone 4Average dates the first frost - September 1 to September 30Average dates the last frost - May 1 to May 30
Zone 5Average dates the first frost - September 30 to October 30Average dates the last frost - 30 March to 30 April
Zone 6Average dates the first frost - September 30 to October 30Average dates the last frost - March 30 to April 30
Zone 7Average dates the first frost - September 30 to October 30Average dates the last frost - March 30 to April 30
Zone 8Average dates the first frost - October 30 to November 30Average dates the last frost - February 28 to March 30
Zone 9Average dates the last frost - November 30 to December 30Average dates the last frost - January 30 to February 28
Zone 10Average dates the first frost - November 30 to December 30Average dates the last frost - January 30 or before
Zone 11Free of Frost throughout the year.
|