Before planting it is a good idea to find your USDA Zone info to estimate 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 to plant watermelon is to examine the USDA zone info for Anamosa.

Planting Calendar for Watermelon

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

Since watermelon require warm weather you must wait until after the last frost before you can plant them.

The earliest that you can plant watermelon in Anamosa is April. However, you really should wait until May if you don't want to take any chances.

The last month that you can plant watermelon and expect a good harvest is probably August. You probably don't want to wait any later than that or else your watermelon may not have a chance to grow to maturity. Starting your watermelon indoors is a great way to get them started a little bit earlier.

Last Frost Date

The average date of last frost is April 15 in Anamosa. It might get as low as -20°F during the coldest months of winter.

Always keep in mind that USDA zone info for Anamosa may not be accurate from year to year and the actual date of last frost changes from year to year. Half of the time in Anamosa you get a frost after April 15 so make sure that you are prepared to cover your watermelon in the event of one of those late frosts.

USDA Zone Info for Anamosa

Here is the info for USDA Zone 5a.

Average Date of Last Frost (spring)	April 15
Average Date of First Frost (fall)	October 15
Lowest Expected Low	-20°F
Highest Expected Low	-15°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 -15°F.

Plants to Grow in Anamosa

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