Before planting it is a good idea to find your USDA Zone info to determine your garden schedule. The most important data that the zone info tells us is average last frost and the lowest expected temperature for your area.

One way of determining when it's a good idea to plant watermelon is to consult the USDA zone info for San Fernando.

Planting Calendar for Watermelon

Frost tolerance for watermelon:	Not tolerant of frost.
When to plant:	After the last frost.

You can not plant watermelon until after the last frost has passed because they are not cold tolerant.

The earliest that you can plant watermelon in San Fernando is February. However, you really should wait until March if you don't want to take any chances.

The last month that you can plant watermelon and expect a good harvest is probably September. Any later than that and your watermelon may not have a chance to grow to maturity. You can get started a couple of weeks earlier by starting your watermelon indoors.

Last Frost Date

On average the last frost is on January 31 in San Fernando. In the coldest months of winter you should expect an average low temperature of 30°F.

Always keep in mind that USDA zone info for San Fernando may not be accurate from year to year and the actual date of last frost will vary from year to year. Half of the time in San Fernando you get surprised by a frost after January 31 so make sure that you are prepared to protect your watermelon in the event of a late frost.

USDA Zone Info for San Fernando

Here is the info for USDA Zone 10a.

Average Date of Last Frost (spring)	January 31
Average Date of First Frost (fall)	December 15
Lowest Expected Low	30°F
Highest Expected Low	35°F

This means that on a really cold year, the coldest it will get is 30°F. On most years you should be prepared to experience lows near 35°F.

Plants to Grow in San Fernando

You may be interested in your other planting guides for San Fernando.