The USDA Zone info is a great tool for gardeners to help us determine 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.

In Oroville you can determine when it's possible to plant tarragon by reviewing 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.

You can plant tarragon a bit earlier in the year because they are barely cold tolerant.

The earliest that you can plant tarragon in Oroville 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 fully mature. If you are starting your tarragon indoors then you might be able to get away with starting them a few weeks earlier.

Last Frost Date

In Oroville the average date of last frost happens on February 15. You can expect an average low temperature of 25°F in the coldest months of winter.

It's important to remember that USDA zone info for Oroville is not always accurate and the actual date of last frost changes from year to year. Half of the time in Oroville it frosts late in the year after February 15 so make sure that you are prepared to protect your tarragon if you have a surprise late frost.

USDA Zone Info for Oroville

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 Oroville

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