The USDA Zone info is a great tool for gardeners to help us figure out your gardening schedule. 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 it's possible to plant bittercress is to use the USDA zone info for Fresno.

Planting Calendar for Bittercress

Frost tolerance for bittercress:	Tolerant of a very small amount of frost.
When to plant:	Up to 3 weeks before last frost.

Since bittercress are one of those plants that can tolerate a tiny bit of cold weather you can plant them slightly earlier in the year than more sensitive plants.

The earliest that you can plant bittercress in Fresno is February. However, you really should wait until March if you don't want to take any chances.

The last month that you can plant bittercress and expect a good harvest is probably September. If you wait any later than that and your bittercress may not have a chance to fully mature. You can get started a couple of weeks earlier by starting your bittercress indoors.

Last Frost Date

In Fresno the average date of last frost happens on February 15. It might get as low as 25°F during the coldest months of winter.

Just be sure to remember that USDA zone info for Fresno is not always accurate and the actual date of last frost changes from year to year. Half of the time in Fresno it frosts late in the year after February 15 so be sure to be ready to cover your bittercress in the event of a surprise late frost.

USDA Zone Info for Fresno

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 Fresno

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