One of the best tools that you have as gardeners to help us determine your gardening schedule is the USDA zone info. The zone info helps tell us things like average date of last frost and lowest expected temperature for your area.

In Mukilteo you can figure out when you can plant sweet potato vine by looking at the USDA zone info.

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.

Since sweet potato vine do not do well in cold weather it's necessary to wait until after all chance of frost has passed before you can plant them.

The earliest that you can plant sweet potato vine in Mukilteo 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 grow to maturity. Starting your sweet potato vine indoors is a great way to get them started a few weeks earlier.

Last Frost Date

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

It's important to remember that USDA zone info for Mukilteo is an average and the actual date of last frost can change quite a bit from year to year. Since half of the time in Mukilteo there is a last frost after March 15 be ready to protect your sweet potato vine in the event of one of those late frosts.

USDA Zone Info for Mukilteo

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 Mukilteo

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