One of the best tools that you have as gardeners to help us figure out 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.

In International Falls you can estimate when it's the best time to plant fiber optic grass by using the USDA zone info.

Planting Calendar for Fiber Optic Grass

Frost tolerance for fiber optic grass:	Not tolerant of frost.
When to plant:	After the last frost.

It's not a good idea to plant fiber optic grass until after the last frost because they require warm weather.

The earliest that you can plant fiber optic grass in International Falls is May. However, you really should wait until June if you don't want to take any chances.

The last month that you can plant fiber optic grass and expect a good harvest is probably August. You probably don't want to wait any later than that or else your fiber optic grass may not have a chance to fully mature. You can get started a couple of weeks earlier by starting your fiber optic grass indoors.

Last Frost Date

On average the last frost is on May 15 in International Falls. In the coldest months of winter you should expect an average low temperature of -40°F.

Just be sure to remember that USDA zone info for International Falls is an average and the actual date of last frost will vary from year to year. Half of the time in International Falls last frost occurs after May 15 so make sure that you are prepared to protect your fiber optic grass if you have one of those late frosts.

USDA Zone Info for International Falls

Here is the info for USDA Zone 3a.

Average Date of Last Frost (spring)	May 15
Average Date of First Frost (fall)	September 15
Lowest Expected Low	-40°F
Highest Expected Low	-35°F

This means that on a really cold year, the coldest it will get is -40°F. On most years you should be prepared to experience lows near -35°F.

Plants to Grow in International Falls

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