Zone 1
Average dates Last Frost: June 1-June 30
Average dates First Frost: July 1-July 31
Note: vulnerable to frost 365 days per year
Zone 2
Average dates Last Frost: May 1-May 31
Average dates First Frost: August 1-August 31
Zone 3
Average dates Last Frost: May 1-May 31
Average dates First Frost: September 1-September 30
Zone 4
Average dates Last Frost: May 1-May 31
Average dates First Frost: September 1-September 30
Zone 5
Average dates Last Frost: March 30-April 30
Average dates First Frost: September 30-October 31
Zone 6
Average dates Last Frost: May 1-May 31
Average dates First Frost: September 30-October 31
Zone 7
Average dates Last Frost: March 30-April 30
Average dates First Frost: September 30-October 31
Zone 8
Average dates Last Frost: February 28-March 30
Average dates First Frost: October 31-November 30
Zone 9
Average dates Last Frost: January 30-February 28
Average dates First Frost: November 30-December 31
Zone 10
Average dates Last Frost: January 30 or before
Average dates First Frost: November 30-December 31
Zone 11
Free of frost throughout the year.

Frost:
Light freeze; damage depends upon length of frost duration.
Light Freeze: -2C/-0C <> 29F/32F - tender plants killed with little destructive effect on other vegetation.
Moderate Freeze: -8C/-2C <> 25F/28F - wide destruction on most vegetation with heavy damage to fruit blossoms and tender semi-hardy plants.
Severe Freeze: -9C <> 24F and colder, heavy damage to most plants.
Shade: No direct sun in this area at all.
Partial Shade: Usually an area under a few trees receiving only 1 to 5 hours of partial sun during the day.
Partial Sun: Usually refers to an area that receives about 3 - 5 hours of full sun per day.
Full Sun: Refers to an area receiving 6 or more hours of full sun per day.
Copyright & copy Gardening Tips and Tools.com 06/01/2006
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