One of the best tools that you have as gardeners to help us figure out your 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 your area.

A common way of figuring out when it's the best time to plant watermelon is to look at the USDA zone info for Berlin.

Planting Calendar for Watermelon

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

You should not plant watermelon until after all chance of frost has passed because they are not cold tolerant.

The earliest that you can plant watermelon in Berlin 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. If you wait any later than that and your watermelon may not have a chance to fully mature. You can get started a couple of weeks earlier by starting your watermelon indoors.

Last Frost Date

The average date of last frost is April 15 in Berlin. You should expect an average low temperature of -20°F in the coldest months of winter.

Since the USDA zone info for Berlin is not always accurate the actual date of last frost can change quite a bit from year to year. Since half of the time in Berlin you get a frost after April 15 be ready to cover your watermelon in the event of a late frost.

USDA Zone Info for Berlin

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 Berlin

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