One of the best tools that you have as gardeners to help us figure out 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.

You can determine when it's the best time to plant sweet potato vine in Santa Rosa 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 when the weather gets warmer.

Since sweet potato vine require warm weather you need to wait until after the last frost when the weather gets warmer before you can plant them.

The earliest that you can plant sweet potato vine in Santa Rosa is March. However, you really should wait until April 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 September. 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 couple of weeks earlier by starting your sweet potato vine indoors.

Last Frost Date

On average the last frost has passed is on February 15 in Santa Rosa. It might get as low as 25°F during the coldest months of winter.

Since the USDA zone info for Santa Rosa is just an average the actual date of last frost will vary from year to year. Half of the time in Santa Rosa you get a frost after February 15 so make sure that you are prepared to protect your sweet potato vine if you have a surprise late frost.

USDA Zone Info for Santa Rosa

Here is the info for USDA Zone 9b.

Average Date of Last Frost (spring)	February 15
Average Date of First Frost (fall)	December 15
Lowest Expected Low	25°F
Highest Expected Low	30°F

This means that on a really cold year, the coldest it will get is 25°F. On most years you should be prepared to experience lows near 30°F.

Plants to Grow in Santa Rosa

You may be interested in your other planting guides for Santa Rosa.