One of the first steps you take when you are estimating your gardening schedule is find your 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.

The USDA zone info for Bellevue can be reviewed to estimate when you can plant sweet potato vine.

Planting Calendar for Sweet Potato Vine

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

It's probably a bad idea to plant sweet potato vine until after the last frost when the weather gets warmer because they are not cold tolerant.

The earliest that you can plant sweet potato vine in Bellevue 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 sweet potato vine and expect a good harvest is probably August. You probably don't want to wait any later than that or else your sweet potato vine may not have a chance to really do well. You can get started a couple of weeks earlier by starting your sweet potato vine indoors.

Last Frost Date

The average date of last frost is March 15 in Bellevue. You can expect an average low temperature of 15°F in the coldest months of winter.

Just be sure to remember that the actual date of last frost is just an average because it is based on the USDA zone info for Bellevue and it is different every year. Half of the time in Bellevue you get surprised by a frost after March 15 so make sure that you are prepared to protect your sweet potato vine if you have a late frost.

USDA Zone Info for Bellevue

Here is the info for USDA Zone 8b.

Average Date of Last Frost (spring)	March 15
Average Date of First Frost (fall)	November 15
Lowest Expected Low	15°F
Highest Expected Low	20°F

This means that on a really cold year, the coldest it will get is 15°F. On most years you should be prepared to experience lows near 20°F.

Plants to Grow in Bellevue

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