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

It's possible to figure out when it's the best time to plant calla lily by looking at the USDA zone info for Chico.

Planting Calendar for Calla Lily

Frost tolerance for calla lily:	Not tolerant of frost.
When to plant:	After the last frost has passed.

Calla Lily are not cold tolerant which means that it is important to wait until it warms up after the last frost has passed before you can plant them.

The earliest that you can plant calla lily in Chico 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 calla lily and expect a good harvest is probably September. Any later than that and your calla lily may not have a chance to really do well. Starting your calla lily 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 Chico. In the coldest months of winter you can expect an average low temperature of 20°F.

Always keep in mind that the actual date of last frost is not always accurate because it is based on the USDA zone info for Chico and it is different every year. Since half of the time in Chico last frost occurs after February 15 be ready to cover your calla lily in the event of a surprise late frost.

USDA Zone Info for Chico

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 Chico

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