When to Plant Sweet Potato Vine in Mount Vernon, WA

Before planting it is a good idea to find your USDA Zone info to determine your garden schedule. The zone info helps tell us things like average date of last frost and lowest expected temperature for your area.

It's a good idea to figure out when it's possible to plant sweet potato vine by looking at the USDA zone info for Mount Vernon.


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 require warm weather which means that you really should wait until it warms up after the last frost before you can plant them.

JanFebMarAprMayJunJulAugSepOctNovDec
Legend 
A good time to plant sweet potato vine
Possibly ok, but a risky time to plant sweet potato vine
Probably not a good time to plant sweet potato vine

The earliest that you can plant sweet potato vine in Mount Vernon 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. Starting your sweet potato vine indoors is a great way to get them started a little bit earlier.

Last Frost Date

The average date of last frost is March 15 in Mount Vernon. In the coldest months of winter you can expect an average low temperature of 10°F.

Just be sure to remember that USDA zone info for Mount Vernon may not be accurate from year to year and the actual date of last frost is different every year. Half of the time in Mount Vernon you get a frost after March 15 so be sure to be ready to cover your sweet potato vine in the event of a late frost.

USDA Zone Info for Mount Vernon

Here is the info for USDA Zone 8a.

Average Date of Last Frost (spring)March 15
Average Date of First Frost (fall)November 15
Lowest Expected Low10°F
Highest Expected Low15°F

This means that on a really cold year, the coldest it will get is 10°F. On most years you should be prepared to experience lows near 15°F.

Plants to Grow in Mount Vernon

You may be interested in your other planting guides for Mount Vernon.