One of the best tools that you have as gardeners to help us determine your gardening schedule is the USDA zone info. The zone info helps tell us things like average date of last frost and lowest expected temperature for your area.

The earliest that you can plant festuca in Great Falls can be estimated by looking at the USDA zone info.

Planting Calendar for Festuca

Frost tolerance for festuca:	Tolerant of some frost.
When to plant:	Up to 5 weeks before last frost.

You can plant festuca a little earlier in the year because they are one of those plants that can tolerate a little bit of cold weather.

The earliest that you can plant festuca in Great Falls 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 festuca and expect a good harvest is probably August. You probably don't want to wait any later than that or else your festuca may not have a chance to grow to maturity. If you are starting your festuca indoors then you might be able to get away with starting them a few weeks earlier.

Last Frost Date

In Great Falls the average date of last frost happens on May 15. You should expect an average low temperature of -30°F in the coldest months of winter.

Remember that USDA zone info for Great Falls may not be accurate from year to year and the actual date of last frost will vary from year to year. Since half of the time in Great Falls it frosts late in the year after May 15 be ready to protect your festuca in the event of a late frost.

USDA Zone Info for Great Falls

Here is the info for USDA Zone 4a.

Average Date of Last Frost (spring)	May 15
Average Date of First Frost (fall)	September 15
Lowest Expected Low	-30°F
Highest Expected Low	-25°F

This means that on a really cold year, the coldest it will get is -30°F. On most years you should be prepared to experience lows near -25°F.

Plants to Grow in Great Falls

You may be interested in your other planting guides for Great Falls.