One of the best tools that you have as gardeners to help us determine your gardening schedule is the USDA zone info. The most important data that the zone info tells us is average last frost and the lowest expected temperature for your area.

The best time to plant parsnip in Suisun City should be determined by looking at the USDA zone info.

Planting Calendar for Parsnip

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

Parsnip tend to make it in some cold which tells us that you can plant them a little earlier in the year than other frost tender plants.

The earliest that you can plant parsnip in Suisun City 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 parsnip and expect a good harvest is probably October. Any later than that and your parsnip may not have a chance to really do well. If you are starting your parsnip indoors then you might be able to get away with starting them a couple of weeks earlier.

Last Frost Date

In Suisun City the average date of last frost happens on February 15. In the coldest months of winter you should expect an average low temperature of 25°F.

Since the USDA zone info for Suisun City may not be accurate from year to year the actual date of last frost will vary from year to year. Since half of the time in Suisun City you get surprised by a frost after February 15 be ready to protect your parsnip if you have a late frost.

USDA Zone Info for Suisun City

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 Suisun City

You may be interested in your other planting guides for Suisun City.