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.

The first chance to plant alternanthera in Guadalupe should be determined by checking out the USDA zone info.

Planting Calendar for Alternanthera

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

It's probably not a good idea to plant alternanthera until after the last frost has passed because they require warm weather.

The earliest that you can plant alternanthera in Guadalupe is March. However, you really should wait until April 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. Any later than that and 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

On average the last frost is on February 15 in Guadalupe. In the coldest months of winter you should expect an average low temperature of 25°F.

Remember that the actual date of last frost is not always accurate because it is based on the USDA zone info for Guadalupe and it is different every year. Half of the time in Guadalupe there is a last frost after February 15 so always be ready to cover your alternanthera in the event of a late frost.

USDA Zone Info for Guadalupe

Here is the info for USDA Zone 9b.

Average Date of Last Frost (spring)	February 15
Average Date of First Frost (fall)	December 15
Lowest Expected Low	25°F
Highest Expected Low	30°F

This means that on a really cold year, the coldest it will get is 25°F. On most years you should be prepared to experience lows near 30°F.

Plants to Grow in Guadalupe

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