When to Plant Sweet Potato Vine in Ephrata, WA

Before planting it is a good idea to find your USDA Zone info to estimate your garden schedule. The most important data that the zone info tells us is average last frost and the lowest expected temperature for your area.

It's a good idea to determine when it's the best time to plant sweet potato vine by reviewing the USDA zone info for Ephrata.


Planting Calendar for Sweet Potato Vine

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

Since sweet potato vine require warm weather you must wait until 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 Ephrata 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 fully mature. You can get started a little bit earlier by starting your sweet potato vine indoors.

Last Frost Date

The average date of last frost is April 15 in Ephrata. In the coldest months of winter you can expect an average low temperature of -5°F.

Since the USDA zone info for Ephrata is just an average the actual date of last frost changes from year to year. Half of the time in Ephrata you get a frost after April 15 so be sure to be ready to protect your sweet potato vine if you have one of those late frosts.

USDA Zone Info for Ephrata

Here is the info for USDA Zone 6b.

Average Date of Last Frost (spring)April 15
Average Date of First Frost (fall)October 15
Lowest Expected Low-5°F
Highest Expected Low0°F

This means that on a really cold year, the coldest it will get is -5°F. On most years you should be prepared to experience lows near 0°F.

Plants to Grow in Ephrata

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