One of the best tools that you have as gardeners to help us figure out 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.

The USDA zone info for Petaluma should be used to determine when you can plant millet.

Planting Calendar for Millet

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

Since millet require warm weather you need to wait until after all chance of frost has passed before you can plant them.

The earliest that you can plant millet in Petaluma 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 millet and expect a good harvest is probably September. Any later than that and your millet may not have a chance to fully mature. You can get started a little bit earlier by starting your millet indoors.

Last Frost Date

The average date of last frost is February 15 in Petaluma. You can expect an average low temperature of 25°F in the coldest months of winter.

Always keep in mind that USDA zone info for Petaluma is an average and the actual date of last frost changes from year to year. Since half of the time in Petaluma there is a last frost after February 15 be ready to protect your millet if you have a surprise late frost.

USDA Zone Info for Petaluma

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 Petaluma

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