When can I plant Watermelon in Zone 13b

One of the best tools that we have as gardeners to help us determine our gardening schedule is the USDA zone info. The most important data that the zone info tells us is average last frost and the lowest expected temperature for our area.

The earliest that you can plant watermelon in Zone 13b should be determined by looking at the USDA zone info.


Planting Calendar for Watermelon

Frost tolerance for watermelon: Not tolerant of frost.
When you should plant them: After the last frost has passed.

Watermelon do not do well in cold weather which means that you really should wait until it warms up after the last frost when the weather gets warmer before you can plant them.

JanFebMarAprMayJunJulAugSepOctNovDec
Legend 
A good time to plant watermelon
Possibly ok, but a risky time to plant watermelon
Probably not a good time to plant watermelon

The earliest that you can plant watermelon in Zone 13b is January. However, you really should wait until February if you don't want to take any chances.

The last month that you can plant watermelon and expect a good harvest is probably November. If you wait 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

In Zone 13b it never frosts. In the coldest months of winter we should expect an average low temperature of 65°F.

Since the USDA zone info for Zone 13b is an average our actual date of last frost is different every year. Since it never frosts in Zone 13b you do not have to be ready to cover your watermelon in the event of one of those late frosts.

USDA Zone Info for Zone 13b

Here is the info for USDA Zone 13b.

Average Date of Last Frost (spring)Never
Average Date of First Frost (fall)Never
Lowest Expected Low65°F
Highest Expected Low70°F

This means that on a really cold year, the coldest it will get is 65°F. On most years you should be prepared to experience lows near 70°F.

Plants to Grow in Zone 13b

You may be interested in our other planting guides for Zone 13b.