Before planting it is a good idea to find your USDA Zone info to estimate your garden schedule. The zone info helps tell us things like average date of last frost and lowest expected temperature for your area.

You can figure out when it's possible to plant cantaloupes in Petaluma by looking at the USDA zone info.

Planting Calendar for Cantaloupes

Frost tolerance for cantaloupes:	Not tolerant of frost.
When to plant:	After the last frost.

It's probably not a good idea to plant cantaloupes until after the last frost when the weather gets warmer because they require warm weather.

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

Since the USDA zone info for Petaluma is just an average the actual date of last frost can change quite a bit from year to year. Half of the time in Petaluma you get a frost after February 15 so always be ready to protect your cantaloupes if you have a 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.