The USDA Zone info is a great tool for gardeners to help us estimate your gardening schedule. The zone info helps tell us things like average date of last frost and lowest expected temperature for your area.

In Sanibel you can determine when it's a good idea to plant watermelon by checking out the USDA zone info.

Planting Calendar for Watermelon

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

Since watermelon are not cold tolerant you really should wait until after the last frost has passed before you can plant them.

The earliest that you can plant watermelon in Sanibel 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. If you are starting your watermelon indoors then you might be able to get away with starting them a little bit earlier.

Last Frost Date

In Sanibel the average date of last frost happens on January 31. In the coldest months of winter you should expect an average low temperature of 30°F.

Keep in mind that USDA zone info for Sanibel 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 Sanibel there is a last frost after January 31 so be sure to be ready to cover your watermelon if you have one of those late frosts.

USDA Zone Info for Sanibel

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 Sanibel

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