One of the first steps you take when you are figuring out your gardening schedule is find your 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 first opportunity to plant garden cress in Campbell can be estimated by looking at 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.

Since garden cress do not do well in cold weather it's important to wait until after the last frost has passed before you can plant them.

The earliest that you can plant garden cress in Campbell 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. Any later than that and your garden cress may not have a chance to grow to maturity. Starting your garden cress indoors is a great way to get them started a little bit earlier.

Last Frost Date

In Campbell the average date of last frost happens on February 15. You should expect an average low temperature of 25°F in the coldest months of winter.

Since the USDA zone info for Campbell is an average the actual date of last frost changes from year to year. Since half of the time in Campbell you get surprised by a frost after February 15 be ready to cover your garden cress in the event of a late frost.

USDA Zone Info for Campbell

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 Campbell

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