One of the first steps you take when you are getting a good idea your gardening schedule is find your USDA Zone info. The zone info helps tell us things like average date of last frost and lowest expected temperature for your area.

In Herndon you can estimate when it's the best time to plant stevia 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.

It's probably not a good idea to plant stevia until after the last frost has passed because they require warm weather.

The earliest that you can plant stevia in Herndon 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 really do well. You can get started a little bit earlier by starting your stevia indoors.

Last Frost Date

On average all chance of frost has passed is on April 15 in Herndon. You can expect an average low temperature of 0°F in the coldest months of winter.

Remember that the actual date of last frost is just an average because it is based on the USDA zone info for Herndon and it changes from year to year. Since half of the time in Herndon you get a frost after April 15 be ready to cover your stevia in the event of a late frost.

USDA Zone Info for Herndon

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 Herndon

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