One of the best tools that you have as gardeners to help us figure out your gardening schedule is the USDA zone info. The zone info helps tell us things like average date of last frost and lowest expected temperature for your area.

By using the USDA zone info for Carlsbad it's a good idea to determine when it's the best time to plant spinach.

Planting Calendar for Spinach

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

Spinach do well in moderate cold which tells us that you can plant them a little bit earlier than other frost tender plants.

The earliest that you can plant spinach in Carlsbad 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 spinach and expect a good harvest is probably October. If you wait any later than that and your spinach may not have a chance to grow to maturity. You can get started a couple of weeks earlier by starting your spinach indoors.

Last Frost Date

In Carlsbad the average date of last frost happens on January 31. It might get as low as 30°F during the coldest months of winter.

It's important to remember that USDA zone info for Carlsbad is not always accurate and the actual date of last frost can change quite a bit from year to year. Since half of the time in Carlsbad there is a last frost after January 31 be ready to cover your spinach in the event of one of those late frosts.

USDA Zone Info for Carlsbad

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 Carlsbad

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