One of the first steps you take when you are making a decision about 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 Larkspur you can determine when to plant tarragon by using the USDA zone info.

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 Larkspur is February. However, you really should wait until March if you don't want to take any chances.

The last month that you can plant tarragon and expect a good harvest is probably September. If you wait any later than that and your tarragon may not have a chance to grow to maturity. You can get started a little bit earlier by starting your tarragon indoors.

Last Frost Date

On average the last frost has passed is on February 15 in Larkspur. In the coldest months of winter you should expect an average low temperature of 25°F.

Since the USDA zone info for Larkspur may not be accurate from year to year the actual date of last frost is different every year. Half of the time in Larkspur last frost occurs after February 15 so make sure that you are ready to cover your tarragon if you have a surprise late frost.

USDA Zone Info for Larkspur

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 Larkspur

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