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

By looking at the USDA zone info for Pleasanton it's possible to estimate when it's a good idea to plant alternanthera.

Planting Calendar for Alternanthera

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

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

The earliest that you can plant alternanthera in Pleasanton 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 little bit earlier by starting your alternanthera indoors.

Last Frost Date

In Pleasanton the average date of last frost happens on February 15. In the coldest months of winter you should expect an average low temperature of 25°F.

It's important to remember that USDA zone info for Pleasanton is just an average and the actual date of last frost changes from year to year. Half of the time in Pleasanton you get surprised by a frost after February 15 so make sure that you are ready to protect your alternanthera in the event of a surprise late frost.

USDA Zone Info for Pleasanton

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 Pleasanton

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