Before planting it is a good idea to find your USDA Zone info to figure out your garden schedule. The zone info helps tell us things like average date of last frost and lowest expected temperature for your area.

The best time to plant garden cress in Zone 9b can be determined 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 all chance of frost has passed.

You really shouldn't plant garden cress until after the last frost because they are not cold tolerant.

The earliest that you can plant garden cress in Zone 9b 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. You probably don't want to wait any later than that or else your garden cress may not have a chance to fully mature. You can get started a couple of weeks earlier by starting your garden cress indoors.

Last Frost Date

The average date of last frost is February 15 in Zone 9b. In the coldest months of winter you should expect an average low temperature of 25°F.

Since the USDA zone info for Zone 9b may not be accurate from year to year the actual date of last frost will vary from year to year. Half of the time in Zone 9b you get surprised by a frost after February 15 so make sure that you are ready to protect your garden cress in the event of one of those late frosts.

USDA Zone Info for Zone 9b

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 Zone 9b

You may be interested in your other planting guides for Zone 9b.