The USDA Zone info is a great tool for gardeners to help us determine your gardening 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 Poquoson it's a good idea to figure out when it's the best time 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 much earlier in the year than other frost tender plants.

The earliest that you can plant liatris in Poquoson 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. If you wait any later than that and your liatris may not have a chance to grow to maturity. You can get started a couple of weeks earlier by starting your liatris indoors.

Last Frost Date

On average the last frost has passed is on March 15 in Poquoson. You can expect an average low temperature of 10°F in the coldest months of winter.

Keep in mind that the actual date of last frost is just an average because it is based on the USDA zone info for Poquoson and it can change quite a bit from year to year. Half of the time in Poquoson it frosts late in the year after March 15 so make sure that you are ready to protect your liatris in the event of a late frost.

USDA Zone Info for Poquoson

Here is the info for USDA Zone 8a.

Average Date of Last Frost (spring)	March 15
Average Date of First Frost (fall)	November 15
Lowest Expected Low	10°F
Highest Expected Low	15°F

This means that on a really cold year, the coldest it will get is 10°F. On most years you should be prepared to experience lows near 15°F.

Plants to Grow in Poquoson

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