One of the best tools that you have as gardeners to help us estimate 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.

By referring to the USDA zone info for West Salem it's a good idea to figure out when to plant sweet potato vine.

Planting Calendar for Sweet Potato Vine

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

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

The earliest that you can plant sweet potato vine in West Salem 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. If you wait any later than that and your sweet potato vine may not have a chance to grow to maturity. If you are starting your sweet potato vine indoors then you might be able to get away with starting them a little bit earlier.

Last Frost Date

On average the last frost has passed is on May 15 in West Salem. It might get as low as -25°F during the coldest months of winter.

It's important to remember that USDA zone info for West Salem may not be accurate from year to year and the actual date of last frost will vary from year to year. Since half of the time in West Salem last frost occurs after May 15 be ready to protect your sweet potato vine in the event of one of those late frosts.

USDA Zone Info for West Salem

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 West Salem

You may be interested in your other planting guides for West Salem.