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

You should be able to estimate when it's a good idea to plant artemesia by referring to the USDA zone info for Gridley.

Planting Calendar for Artemesia

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

Since artemesia do ok in moderate cold you can plant them slightly earlier in the year than other frost tender plants.

The earliest that you can plant artemesia in Gridley 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 artemesia and expect a good harvest is probably September. Any later than that and your artemesia may not have a chance to fully mature. Starting your artemesia indoors is a great way to get them started a couple of weeks earlier.

Last Frost Date

On average the last frost when the weather gets warmer is on February 15 in Gridley. It might get as low as 25°F during the coldest months of winter.

Since the USDA zone info for Gridley is an average the actual date of last frost is different every year. Half of the time in Gridley last frost occurs after February 15 so always be ready to protect your artemesia if you have a surprise late frost.

USDA Zone Info for Gridley

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 Gridley

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