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

The USDA zone info for Kennewick can be reviewed to figure out when it's possible to plant stevia.

Planting Calendar for Stevia

Frost tolerance for stevia:	Not tolerant of frost.
When to plant:	After all chance of frost has passed.

It's a bad idea to plant stevia until after the last frost when the weather gets warmer because they do not do well in cold weather.

The earliest that you can plant stevia in Kennewick 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 stevia and expect a good harvest is probably August. Any later than that and your stevia may not have a chance to grow to maturity. Starting your stevia indoors is a great way to get them started a couple of weeks earlier.

Last Frost Date

In Kennewick the average date of last frost happens on April 15. You can expect an average low temperature of 0°F in the coldest months of winter.

Since the USDA zone info for Kennewick is an average the actual date of last frost will vary from year to year. Half of the time in Kennewick it frosts late in the year after April 15 so be sure to be ready to cover your stevia in the event of one of those late frosts.

USDA Zone Info for Kennewick

Here is the info for USDA Zone 7a.

Average Date of Last Frost (spring)	April 15
Average Date of First Frost (fall)	October 15
Lowest Expected Low	0°F
Highest Expected Low	5°F

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

Plants to Grow in Kennewick

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