Before planting it is a good idea to find your USDA Zone info to determine your garden schedule. The zone info helps tell us things like average date of last frost and lowest expected temperature for your area.

In Webster you can estimate when you can plant alternanthera by looking at the USDA zone info.

Planting Calendar for Alternanthera

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

It's probably not a good idea to plant alternanthera until after the last frost has passed because they do not do well in cold weather.

The earliest that you can plant alternanthera in Webster 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. If you wait any later than that and your alternanthera may not have a chance to fully mature. You can get started a few weeks earlier by starting your alternanthera indoors.

Last Frost Date

The average date of last frost is February 15 in Webster. It might get as low as 20°F during the coldest months of winter.

It's important to remember that USDA zone info for Webster is just an average and the actual date of last frost is different every year. Since half of the time in Webster it frosts late in the year after February 15 be ready to protect your alternanthera if you have one of those late frosts.

USDA Zone Info for Webster

Here is the info for USDA Zone 9a.

Average Date of Last Frost (spring)	February 15
Average Date of First Frost (fall)	December 15
Lowest Expected Low	20°F
Highest Expected Low	25°F

This means that on a really cold year, the coldest it will get is 20°F. On most years you should be prepared to experience lows near 25°F.

Plants to Grow in Webster

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