One of the first steps you take when you are figuring out 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 should be able to estimate when it's a good idea to plant chrysocephalum by looking at the USDA zone info for Atwater.

Planting Calendar for Chrysocephalum

Frost tolerance for chrysocephalum:	Not tolerant of frost.
When to plant:	After all chance of frost has passed.

Chrysocephalum require warm weather which means that it's necessary to wait until it warms up after the last frost has passed before you can plant them.

The earliest that you can plant chrysocephalum in Atwater 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 chrysocephalum and expect a good harvest is probably September. Any later than that and your chrysocephalum may not have a chance to fully mature. You can get started a couple of weeks earlier by starting your chrysocephalum indoors.

Last Frost Date

The average date of last frost is February 15 in Atwater. You should expect an average low temperature of 20°F in the coldest months of winter.

Since the USDA zone info for Atwater is just an average the actual date of last frost is different every year. Half of the time in Atwater you get a frost after February 15 so make sure that you are prepared to cover your chrysocephalum if you have a surprise late frost.

USDA Zone Info for Atwater

Here is the info for USDA Zone 9a.

Average Date of Last Frost (spring)	February 15
Average Date of First Frost (fall)	December 15
Lowest Expected Low	20°F
Highest Expected Low	25°F

This means that on a really cold year, the coldest it will get is 20°F. On most years you should be prepared to experience lows near 25°F.

Plants to Grow in Atwater

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