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.

It's possible to figure out when it's a good idea to plant alternanthera by reviewing the USDA zone info for Seaside.

Planting Calendar for Alternanthera

Frost tolerance for alternanthera:	Not tolerant of frost.
When to plant:	After the last frost has passed.

You can not plant alternanthera until after all chance of frost has passed because they require warm weather.

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

Last Frost Date

In Seaside the average date of last frost happens on January 31. You can expect an average low temperature of 30°F in the coldest months of winter.

It's important to remember that USDA zone info for Seaside is an average and the actual date of last frost can change quite a bit from year to year. Since half of the time in Seaside last frost occurs after January 31 be ready to cover your alternanthera if you have a late frost.

USDA Zone Info for Seaside

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 Seaside

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