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.

By looking at the USDA zone info for Santa Ana it's possible to determine when it's possible to plant amaranthus.

Planting Calendar for Amaranthus

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

It's probably not a good idea to plant amaranthus until after all chance of frost has passed because they are not cold tolerant.

The earliest that you can plant amaranthus in Santa Ana 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 amaranthus and expect a good harvest is probably September. You probably don't want to wait any later than that or else your amaranthus may not have a chance to really do well. Starting your amaranthus indoors is a great way to get them started a couple of weeks earlier.

Last Frost Date

The average date of last frost is January 31 in Santa Ana. You should expect an average low temperature of 30°F in the coldest months of winter.

Just be sure to remember that USDA zone info for Santa Ana is an average and the actual date of last frost will vary from year to year. Half of the time in Santa Ana you get surprised by a frost after January 31 so always be ready to cover your amaranthus in the event of a late frost.

USDA Zone Info for Santa Ana

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 Santa Ana

You may be interested in your other planting guides for Santa Ana.