One of the first steps you take when you are estimating 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.

The USDA zone info for Siloam Springs should be used to figure out when you can plant tarragon.

Planting Calendar for Tarragon

Frost tolerance for tarragon:	Tolerant of a very small amount of frost.
When to plant:	Up to 3 weeks before last frost.

Tarragon do ok in moderate cold which means that you can start planting them slightly earlier than other frost tender plants.

The earliest that you can plant tarragon in Siloam Springs 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 tarragon and expect a good harvest is probably August. Any later than that and your tarragon may not have a chance to really do well. You can get started a couple of weeks earlier by starting your tarragon indoors.

Last Frost Date

On average the last frost when the weather gets warmer is on April 15 in Siloam Springs. In the coldest months of winter you can expect an average low temperature of 0°F.

Remember that the actual date of last frost is just an average because it is based on the USDA zone info for Siloam Springs and it will vary from year to year. Since half of the time in Siloam Springs you get a frost after April 15 be ready to protect your tarragon in the event of one of those late frosts.

USDA Zone Info for Siloam Springs

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 Siloam Springs

You may be interested in your other planting guides for Siloam Springs.