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.

In Sunnyvale you can figure out when it's the best time to plant garden cress by checking out the USDA zone info.

Planting Calendar for Garden cress

Frost tolerance for garden cress:	Not tolerant of frost.
When to plant:	After the last frost when the weather gets warmer.

You really shouldn't plant garden cress until after all chance of frost has passed because they do not do well in cold weather.

The earliest that you can plant garden cress in Sunnyvale 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 garden cress and expect a good harvest is probably September. If you wait any later than that and your garden cress may not have a chance to fully mature. You can get started a few weeks earlier by starting your garden cress indoors.

Last Frost Date

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

Just be sure to remember that USDA zone info for Sunnyvale may not be accurate from year to year and the actual date of last frost changes from year to year. Since half of the time in Sunnyvale you get surprised by a frost after February 15 be ready to protect your garden cress in the event of one of those late frosts.

USDA Zone Info for Sunnyvale

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 Sunnyvale

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