One of the first steps you take when you are determining 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.

A common way of determining when to plant bidens is to use the USDA zone info for Chowchilla.

Planting Calendar for Bidens

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

Bidens are not cold tolerant which means that it's necessary to wait until it warms up after the last frost when the weather gets warmer before you can plant them.

The earliest that you can plant bidens in Chowchilla 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 bidens and expect a good harvest is probably September. Any later than that and your bidens may not have a chance to really do well. You can get started a few weeks earlier by starting your bidens indoors.

Last Frost Date

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

Just be sure to remember that USDA zone info for Chowchilla is not always accurate and the actual date of last frost is different every year. Half of the time in Chowchilla last frost occurs after February 15 so make sure that you are ready to protect your bidens if you have one of those late frosts.

USDA Zone Info for Chowchilla

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 Chowchilla

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