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 figuring out when it's a good idea to plant watermelon is to examine the USDA zone info for Leavenworth.

Planting Calendar for Watermelon

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

It's a bad idea to plant watermelon until after the last frost has passed because they do not do well in cold weather.

The earliest that you can plant watermelon in Leavenworth 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 really do well. Starting your watermelon indoors is a great way to get them started a couple of weeks earlier.

Last Frost Date

In Leavenworth the average date of last frost happens on April 15. In the coldest months of winter you can expect an average low temperature of -10°F.

Since the USDA zone info for Leavenworth may not be accurate from year to year the actual date of last frost will vary from year to year. Half of the time in Leavenworth you get a frost after April 15 so be sure to be ready to cover your watermelon if you have a surprise late frost.

USDA Zone Info for Leavenworth

Here is the info for USDA Zone 6a.

Average Date of Last Frost (spring)	April 15
Average Date of First Frost (fall)	October 15
Lowest Expected Low	-10°F
Highest Expected Low	-5°F

This means that on a really cold year, the coldest it will get is -10°F. On most years you should be prepared to experience lows near -5°F.

Plants to Grow in Leavenworth

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