The USDA Zone info is a great tool for gardeners to help us figure out your gardening schedule. The most important data that the zone info tells us is average last frost and the lowest expected temperature for your area.

You can figure out when you can plant stevia in Atherton by referring to the USDA zone info.

Planting Calendar for Stevia

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

You should not plant stevia until after all chance of frost has passed because they do not do well in cold weather.

The earliest that you can plant stevia in Atherton 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 stevia and expect a good harvest is probably September. You probably don't want to wait any later than that or else your stevia may not have a chance to fully mature. You can get started a couple of weeks earlier by starting your stevia indoors.

Last Frost Date

The average date of last frost is February 15 in Atherton. In the coldest months of winter you should expect an average low temperature of 25°F.

Since the USDA zone info for Atherton is an average the actual date of last frost can change quite a bit from year to year. Since half of the time in Atherton it frosts late in the year after February 15 be ready to protect your stevia if you have a late frost.

USDA Zone Info for Atherton

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 Atherton

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