The USDA Zone info is a great tool for gardeners to help us figure out your gardening schedule. The most important data that the zone info tells us is average last frost and the lowest expected temperature for your area.

It's possible to estimate when it's a good idea to plant sweet potato vine by checking out the USDA zone info for Berlin.

Planting Calendar for Sweet Potato Vine

Frost tolerance for sweet potato vine:	Not tolerant of frost.
When to plant:	After the last frost.

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

The earliest that you can plant sweet potato vine in Berlin is May. However, you really should wait until June if you don't want to take any chances.

The last month that you can plant sweet potato vine and expect a good harvest is probably August. Any later than that and your sweet potato vine may not have a chance to grow to maturity. You can get started a few weeks earlier by starting your sweet potato vine indoors.

Last Frost Date

The average date of last frost is May 15 in Berlin. It might get as low as -25°F during 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. Half of the time in Berlin you get surprised by a frost after May 15 so always be ready to protect your sweet potato vine in the event of a surprise late frost.

USDA Zone Info for Berlin

Here is the info for USDA Zone 4b.

Average Date of Last Frost (spring)	May 15
Average Date of First Frost (fall)	September 15
Lowest Expected Low	-25°F
Highest Expected Low	-20°F

This means that on a really cold year, the coldest it will get is -25°F. On most years you should be prepared to experience lows near -20°F.

Plants to Grow in Berlin

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