One of the best tools that you have as gardeners to help us estimate your gardening schedule is the USDA zone info. The most important data that the zone info tells us is average last frost and the lowest expected temperature for your area.

The USDA zone info for Southgate can be reviewed 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 earlier in the year than plants that are more sensitive to the cold.

The earliest that you can plant liatris in Southgate 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. Any later than that and your liatris may not have a chance to grow to maturity. If you are starting your liatris indoors then you might be able to get away with starting them a little bit earlier.

Last Frost Date

On average all chance of frost has passed is on April 15 in Southgate. It might get as low as -5°F during the coldest months of winter.

Since the USDA zone info for Southgate may not be accurate from year to year the actual date of last frost can change quite a bit from year to year. Half of the time in Southgate last frost occurs after April 15 so just be sure to be ready to cover your liatris in the event of a surprise late frost.

USDA Zone Info for Southgate

Here is the info for USDA Zone 6b.

Average Date of Last Frost (spring)	April 15
Average Date of First Frost (fall)	October 15
Lowest Expected Low	-5°F
Highest Expected Low	0°F

This means that on a really cold year, the coldest it will get is -5°F. On most years you should be prepared to experience lows near 0°F.

Plants to Grow in Southgate

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