Success depends upon counting the weeks between the last freeze date in your area and putting those seeds in the starting pots.
For example, the last freeze date for our NE OK zone 7 is April 15. Some years the last freeze is actually in March; other years it really does freeze in mid-April. All we can do is look at that average date and use the calendar to make our best guess.
In Albuquerque, New Mexico, for example the last average freeze date ranges from Apr 13 to May 7
Dates of the Last Spring Freeze Around the Albuquerque Metro Area
|5300||MAR 6, |
|APR 13||MAY 7, |
|MAY 2||MAY 1||APR 2||APR 18|
|Foothills (1991-2009)||6120||APR 12, 2005||APR 24||MAY 3, 2008||MAY 2||MAY 1||APR 18||MAY 3|
|S. Valley (1948-2009)||4955||MAR 25, 2006||APR 19||MAY 22, 1962||MSG||MSG||APR 7||MAY 2|
|Los Lunas (1957-2009)||4840||APR 3, 2000||MAY 2||MAY 23, 1975||MAY 4||MAY 3||APR 20||APR 24|
|5015||APR 13, 1990||MAY 7||MAY 27, 1996||MSG||MSG||APR 16||MAY 3|
In Lubbock, TX, the last freeze date ranges from Mar 28 to Apr 22!
In western South Dakota, the last freeze dates are between April and June! Look at this link -
In central Alabama the last freeze date is earlier, of course - between March 9 and Apr 15.
|Earliest Final Spring Freeze||February 3, 1945||None in 1921*|
|Average Final Spring Freeze|
There is a cool tool at http://davesgarden.com/guides/freeze-frost-dates/ where you enter your zip code (US Post Office) and get the last freeze date for your area. Click over and check yours.