The USDA Zone info is a great tool for gardeners to help us estimate 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 possible to determine when it's a good idea to plant onions by reviewing the USDA zone info for El Segundo.

Planting Calendar for Onions

Frost tolerance for onions:	Very tolerant of frost.
When to plant:	Up to 7 weeks before last frost.

Onions do well in cold which tells us that you can plant them a quite a bit earlier than more sensitive plants.

The earliest that you can plant onions in El Segundo 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 onions and expect a good harvest is probably October. If you wait any later than that and your onions may not have a chance to really do well. You can get started a few weeks earlier by starting your onions indoors.

Last Frost Date

On average the last frost has passed is on January 31 in El Segundo. In the coldest months of winter you can expect an average low temperature of 35°F.

Keep in mind that USDA zone info for El Segundo is not always accurate and the actual date of last frost will vary from year to year. Since half of the time in El Segundo you get a frost after January 31 be ready to protect your onions if you have a surprise late frost.

USDA Zone Info for El Segundo

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 El Segundo

You may be interested in your other planting guides for El Segundo.