One of the best tools that you have as gardeners to help us determine your gardening schedule is the 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.

A common way of making a decision about when it's possible to plant mustard greens is to look at the USDA zone info for Murrieta.

Planting Calendar for Mustard greens

Frost tolerance for mustard greens:	Tolerant of some frost.
When to plant:	Up to 5 weeks before last frost.

Since mustard greens are moderately cold tolerant you can plant them a bit earlier in the year than other frost tender plants.

The earliest that you can plant mustard greens in Murrieta is January. However, you really should wait until February if you don't want to take any chances.

The last month that you can plant mustard greens and expect a good harvest is probably October. Any later than that and your mustard greens may not have a chance to grow to maturity. You can get started a little bit earlier by starting your mustard greens indoors.

Last Frost Date

The average date of last frost is January 31 in Murrieta. In the coldest months of winter you should expect an average low temperature of 30°F.

Since the USDA zone info for Murrieta is just an average the actual date of last frost can change quite a bit from year to year. Half of the time in Murrieta you get surprised by a frost after January 31 so make sure that you are prepared to cover your mustard greens in the event of a late frost.

USDA Zone Info for Murrieta

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 Murrieta

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