One of the first steps you take when you are figuring out your gardening schedule is find your USDA Zone info. The zone info helps tell us things like average date of last frost and lowest expected temperature for your area.

You can figure out when you can plant sweet potato vine in Federal Way by referring to the USDA zone info.

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.

Sweet Potato Vine do not do well in cold weather which tells us that you really should wait until it warms up after all chance of frost has passed before you can plant them.

The earliest that you can plant sweet potato vine in Federal Way 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. If you wait any later than that and your sweet potato vine may not have a chance to grow to maturity. Starting your sweet potato vine indoors is a great way to get them started a couple of weeks earlier.

Last Frost Date

In Federal Way the average date of last frost happens on March 15. In the coldest months of winter you can expect an average low temperature of 15°F.

Since the USDA zone info for Federal Way is not always accurate the actual date of last frost is different every year. Half of the time in Federal Way you get a frost after March 15 so just be sure to be ready to protect your sweet potato vine if you have a surprise late frost.

USDA Zone Info for Federal Way

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 Federal Way

You may be interested in your other planting guides for Federal Way.