One of the first steps you take when you are making a decision about your gardening schedule is find your USDA Zone info. The most important data that the zone info tells us is average last frost and the lowest expected temperature for your area.

You can estimate when it's a good idea to plant asters in Antioch by looking at the USDA zone info.

Planting Calendar for Asters

Frost tolerance for asters:	Tolerant of some frost.
When to plant:	Up to 5 weeks before last frost.

You can plant asters a little bit earlier in the year because they do well in moderate cold.

The earliest that you can plant asters in Antioch is January. However, you really should wait until February if you don't want to take any chances.

The last month that you can plant asters and expect a good harvest is probably October. You probably don't want to wait any later than that or else your asters may not have a chance to grow to maturity. Starting your asters indoors is a great way to get them started a few weeks earlier.

Last Frost Date

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

Since the USDA zone info for Antioch may not be accurate from year to year the actual date of last frost will vary from year to year. Half of the time in Antioch it frosts late in the year after February 15 so make sure that you are ready to cover your asters if you have a surprise late frost.

USDA Zone Info for Antioch

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 Antioch

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