Before planting it is a good idea to find your USDA Zone info to estimate your garden schedule. 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 mimulus in Fairfield can be determined by using the USDA zone info.

Planting Calendar for Mimulus

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

You can not plant mimulus until after the last frost has passed because they do not do well in cold weather.

The earliest that you can plant mimulus in Fairfield 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 mimulus and expect a good harvest is probably September. If you wait any later than that and your mimulus may not have a chance to fully mature. If you are starting your mimulus indoors then you might be able to get away with starting them a couple of weeks earlier.

Last Frost Date

The average date of last frost is February 15 in Fairfield. It might get as low as 25°F during the coldest months of winter.

Since the USDA zone info for Fairfield is just an average the actual date of last frost will vary from year to year. Half of the time in Fairfield it frosts late in the year after February 15 so make sure that you are prepared to cover your mimulus in the event of a late frost.

USDA Zone Info for Fairfield

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 Fairfield

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