One of the best tools that you have as gardeners to help us determine your gardening schedule is the USDA zone info. The zone info helps tell us things like average date of last frost and lowest expected temperature for your area.

A way of estimating when to plant oriental poppies is to use the USDA zone info for Chico.

Planting Calendar for Oriental poppies

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

Since oriental poppies do well in moderate cold you can plant them a little bit earlier in the year than more sensitive plants.

The earliest that you can plant oriental poppies in Chico 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 oriental poppies and expect a good harvest is probably October. Any later than that and your oriental poppies may not have a chance to really do well. If you are starting your oriental poppies indoors then you might be able to get away with starting them a little bit earlier.

Last Frost Date

On average the last frost has passed is on February 15 in Chico. In the coldest months of winter you can expect an average low temperature of 20°F.

Since the USDA zone info for Chico may not be accurate from year to year the actual date of last frost changes from year to year. Since half of the time in Chico there is a last frost after February 15 be ready to cover your oriental poppies if you have a 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.