The USDA Zone info is a great tool for gardeners to help us determine your gardening schedule. The zone info helps tell us things like average date of last frost and lowest expected temperature for your area.

The best time to plant stevia in Harlingen can be determined by reviewing the USDA zone info.

Planting Calendar for Stevia

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

Since stevia are not cold tolerant you need to wait until after the last frost has passed before you can plant them.

The earliest that you can plant stevia in Harlingen 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. If you wait any later than that and your stevia may not have a chance to really do well. You can get started a few weeks earlier by starting your stevia indoors.

Last Frost Date

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

Since the USDA zone info for Harlingen may not be accurate from year to year the actual date of last frost changes from year to year. Half of the time in Harlingen there is a last frost after February 15 so make sure that you are ready to protect your stevia in the event of one of those late frosts.

USDA Zone Info for Harlingen

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 Harlingen

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