Before planting it is a good idea to find your USDA Zone info to figure out your garden schedule. The most important data that the zone info tells us is average last frost and the lowest expected temperature for your area.

In Smithville you can estimate when it's a good idea to plant liatris by using the USDA zone info.

Planting Calendar for Liatris

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

Liatris do well in a bit of cold which tells us that you can plant them much earlier in the year than other frost tender plants.

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

The last month that you can plant liatris and expect a good harvest is probably September. You probably don't want to wait any later than that or else your liatris may not have a chance to really do well. Starting your liatris indoors is a great way to get them started a little bit earlier.

Last Frost Date

The average date of last frost is March 15 in Smithville. You can expect an average low temperature of 15°F in the coldest months of winter.

It's important to remember that USDA zone info for Smithville is an average and the actual date of last frost will vary from year to year. Half of the time in Smithville last frost occurs after March 15 so make sure that you are ready to cover your liatris if you have one of those late frosts.

USDA Zone Info for Smithville

Here is the info for USDA Zone 8b.

Average Date of Last Frost (spring)	March 15
Average Date of First Frost (fall)	November 15
Lowest Expected Low	15°F
Highest Expected Low	20°F

This means that on a really cold year, the coldest it will get is 15°F. On most years you should be prepared to experience lows near 20°F.

Plants to Grow in Smithville

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