Before planting it is a good idea to find your USDA Zone info to figure out your garden schedule. The most important data that the zone info tells us is average last frost and the lowest expected temperature for your area.

By using the USDA zone info for Thatcher it's possible to estimate when you can plant alternanthera.

Planting Calendar for Alternanthera

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

It's probably a bad idea to plant alternanthera until after the last frost when the weather gets warmer because they are not cold tolerant.

The earliest that you can plant alternanthera in Thatcher is April. However, you really should wait until May if you don't want to take any chances.

The last month that you can plant alternanthera and expect a good harvest is probably August. If you wait any later than that and your alternanthera may not have a chance to fully mature. Starting your alternanthera indoors is a great way to get them started a few weeks earlier.

Last Frost Date

On average the last frost is on March 15 in Thatcher. It might get as low as 15°F during the coldest months of winter.

Since the USDA zone info for Thatcher is an average the actual date of last frost changes from year to year. Half of the time in Thatcher it frosts late in the year after March 15 so be sure to be ready to cover your alternanthera if you have a late frost.

USDA Zone Info for Thatcher

Here is the info for USDA Zone 8b.

Average Date of Last Frost (spring)	March 15
Average Date of First Frost (fall)	November 15
Lowest Expected Low	15°F
Highest Expected Low	20°F

This means that on a really cold year, the coldest it will get is 15°F. On most years you should be prepared to experience lows near 20°F.

Plants to Grow in Thatcher

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