One of the best tools that you have as gardeners to help us figure out your gardening schedule is the 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 estimate when you can plant alternanthera by reviewing the USDA zone info for Joshua.

Planting Calendar for Alternanthera

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

It's not a good idea to plant alternanthera until after all chance of frost has passed because they do not do well in cold weather.

The earliest that you can plant alternanthera in Joshua 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. You probably don't want to wait any later than that or else your alternanthera may not have a chance to really do well. You can get started a little bit earlier by starting your alternanthera indoors.

Last Frost Date

In Joshua the average date of last frost happens on March 15. It might get as low as 10°F during the coldest months of winter.

Just be sure to remember that USDA zone info for Joshua may not be accurate from year to year and the actual date of last frost can change quite a bit from year to year. Since half of the time in Joshua there is a last frost after March 15 be ready to protect your alternanthera if you have a late frost.

USDA Zone Info for Joshua

Here is the info for USDA Zone 8a.

Average Date of Last Frost (spring)	March 15
Average Date of First Frost (fall)	November 15
Lowest Expected Low	10°F
Highest Expected Low	15°F

This means that on a really cold year, the coldest it will get is 10°F. On most years you should be prepared to experience lows near 15°F.

Plants to Grow in Joshua

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