The USDA Zone info is a great tool for gardeners to help us figure out your gardening schedule. The most important data that the zone info tells us is average last frost and the lowest expected temperature for your area.

In Hugo you can figure out when to plant liatris by checking out 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.

Since liatris do well in cold you can plant them much earlier in the year than other frost tender plants.

The earliest that you can plant liatris in Hugo 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 liatris and expect a good harvest is probably August. Any later than that and your liatris may not have a chance to fully mature. You can get started a few weeks earlier by starting your liatris indoors.

Last Frost Date

The average date of last frost is May 15 in Hugo. You can expect an average low temperature of -25°F in the coldest months of winter.

Since the USDA zone info for Hugo is an average the actual date of last frost can change quite a bit from year to year. Since half of the time in Hugo you get surprised by a frost after May 15 be ready to protect your liatris in the event of a surprise late frost.

USDA Zone Info for Hugo

Here is the info for USDA Zone 4b.

Average Date of Last Frost (spring)	May 15
Average Date of First Frost (fall)	September 15
Lowest Expected Low	-25°F
Highest Expected Low	-20°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 -20°F.

Plants to Grow in Hugo

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