One of the best tools that you have as gardeners to help us determine 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 USDA zone info for Mcallen can be looked at to estimate when it's a good idea to plant liatris.

Planting Calendar for Liatris

Frost tolerance for liatris:	Very tolerant of frost.
When to plant:	Up to 7 weeks before last frost.

Since liatris are very cold tolerant you can plant them earlier in the year than more sensitive plants.

The earliest that you can plant liatris in Mcallen is January. However, you really should wait until February if you don't want to take any chances.

The last month that you can plant liatris and expect a good harvest is probably October. Any later than that and your liatris may not have a chance to fully mature. You can get started a couple of weeks earlier by starting your liatris indoors.

Last Frost Date

In Mcallen the average date of last frost happens on February 15. You can expect an average low temperature of 25°F in the coldest months of winter.

It's important to remember that USDA zone info for Mcallen is an average and the actual date of last frost changes from year to year. Half of the time in Mcallen last frost occurs after February 15 so make sure that you are prepared to cover your liatris in the event of a late frost.

USDA Zone Info for Mcallen

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 Mcallen

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