The USDA Zone info is a great tool for gardeners to help us determine your gardening schedule. The most important data that the zone info tells us is average last frost and the lowest expected temperature for your area.

It's a good idea to estimate when you can plant garden cress by using the USDA zone info for Irvine.

Planting Calendar for Garden cress

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

Since garden cress require warm weather it is necessary to wait until after the last frost when the weather gets warmer before you can plant them.

The earliest that you can plant garden cress in Irvine 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 garden cress and expect a good harvest is probably September. Any later than that and your garden cress may not have a chance to really do well. You can get started a few weeks earlier by starting your garden cress indoors.

Last Frost Date

In Irvine the average date of last frost happens on January 31. In the coldest months of winter you should expect an average low temperature of 30°F.

Remember that the actual date of last frost is just an average because it is based on the USDA zone info for Irvine and it is different every year. Since half of the time in Irvine it frosts late in the year after January 31 be ready to cover your garden cress in the event of a late frost.

USDA Zone Info for Irvine

Here is the info for USDA Zone 10a.

Average Date of Last Frost (spring)	January 31
Average Date of First Frost (fall)	December 15
Lowest Expected Low	30°F
Highest Expected Low	35°F

This means that on a really cold year, the coldest it will get is 30°F. On most years you should be prepared to experience lows near 35°F.

Plants to Grow in Irvine

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