The USDA Zone info is a great tool for gardeners to help us figure out 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.

In Imperial Beach you can determine when it's a good idea to plant amaranthus by checking out the USDA zone info.

Planting Calendar for Amaranthus

Frost tolerance for amaranthus:	Not tolerant of frost.
When to plant:	After all chance of frost has passed.

You really shouldn't plant amaranthus until after the last frost when the weather gets warmer because they are not cold tolerant.

The earliest that you can plant amaranthus in Imperial Beach 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 grow to maturity. If you are starting your amaranthus indoors then you might be able to get away with starting them a few weeks earlier.

Last Frost Date

In Imperial Beach the average date of last frost happens on January 31. It might get as low as 35°F during the coldest months of winter.

Remember that USDA zone info for Imperial Beach is just an average and the actual date of last frost will vary from year to year. Since half of the time in Imperial Beach you get a frost after January 31 be ready to cover your amaranthus 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.