One of the first steps you take when you are determining your gardening schedule is find your USDA Zone info. The zone info helps tell us things like average date of last frost and lowest expected temperature for your area.

The USDA zone info for Imperial Beach can be reffered to in order to estimate when it's the best time to plant mustard greens.

Planting Calendar for Mustard greens

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

Mustard greens do well in moderate cold which tells us that you can get them planted earlier than plants that are more sensitive to the cold.

The earliest that you can plant mustard greens in Imperial Beach 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 really do well. Starting your mustard greens indoors is a great way to get them started a few weeks earlier.

Last Frost Date

The average date of last frost is January 31 in Imperial Beach. It might get as low as 35°F during the coldest months of winter.

Keep in mind that USDA zone info for Imperial Beach is just an average and the actual date of last frost can change quite a bit from year to year. Half of the time in Imperial Beach there is a last frost after January 31 so be sure to be ready to cover your mustard greens if you have a surprise late frost.

USDA Zone Info for Imperial Beach

Here is the info for USDA Zone 10b.

Average Date of Last Frost (spring)	January 31
Average Date of First Frost (fall)	December 15
Lowest Expected Low	35°F
Highest Expected Low	40°F

This means that on a really cold year, the coldest it will get is 35°F. On most years you should be prepared to experience lows near 40°F.

Plants to Grow in Imperial Beach

You may be interested in your other planting guides for Imperial Beach.