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 referring to the USDA zone info for Latrobe you will be able 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.

Liatris tend to make it in cold weather which means that you can plant them quite a bit earlier in the year than more sensitive plants.

The earliest that you can plant liatris in Latrobe 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 fully mature. 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 April 15 in Latrobe. It might get as low as -10°F during the coldest months of winter.

Since the USDA zone info for Latrobe 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 Latrobe you get surprised by a frost after April 15 so always be ready to protect your liatris in the event of one of those late frosts.

USDA Zone Info for Latrobe

Here is the info for USDA Zone 6a.

Average Date of Last Frost (spring)	April 15
Average Date of First Frost (fall)	October 15
Lowest Expected Low	-10°F
Highest Expected Low	-5°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 -5°F.

Plants to Grow in Latrobe

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