Before planting it is a good idea to find your USDA Zone info to determine your garden schedule. The zone info helps tell us things like average date of last frost and lowest expected temperature for your area.

One way of getting a good idea when it's the best time to plant watermelon is to look at the USDA zone info for Barstow.

Planting Calendar for Watermelon

Frost tolerance for watermelon:	Not tolerant of frost.
When to plant:	After all chance of frost has passed.

You really shouldn't plant watermelon until after all chance of frost has passed because they require warm weather.

The earliest that you can plant watermelon in Barstow is March. However, you really should wait until April 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. If you wait any later than that and your watermelon may not have a chance to really do well. You can get started a couple of weeks earlier by starting your watermelon indoors.

Last Frost Date

On average the last frost when the weather gets warmer is on February 15 in Barstow. You can expect an average low temperature of 20°F in the coldest months of winter.

It's important to remember that USDA zone info for Barstow may not be accurate from year to year and the actual date of last frost is different every year. Since half of the time in Barstow there is a last frost after February 15 be ready to protect your watermelon if you have one of those late frosts.

USDA Zone Info for Barstow

Here is the info for USDA Zone 9a.

Average Date of Last Frost (spring)	February 15
Average Date of First Frost (fall)	December 15
Lowest Expected Low	20°F
Highest Expected Low	25°F

This means that on a really cold year, the coldest it will get is 20°F. On most years you should be prepared to experience lows near 25°F.

Plants to Grow in Barstow

You may be interested in your other planting guides for Barstow.