Before planting it is a good idea to find your USDA Zone info to determine your garden schedule. The zone info helps tell us things like average date of last frost and lowest expected temperature for your area.

A way of determining when it's the best time to plant fiber optic grass is to check out the USDA zone info for Caribou.

Planting Calendar for Fiber Optic Grass

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

Fiber Optic Grass are not cold tolerant which means that it's necessary to wait until it warms up after the last frost before you can plant them.

The earliest that you can plant fiber optic grass in Caribou 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

The average date of last frost is May 15 in Caribou. You should expect an average low temperature of -30°F in the coldest months of winter.

Keep in mind that the actual date of last frost is just an average because it is based on the USDA zone info for Caribou and it changes from year to year. Since half of the time in Caribou you get surprised by a frost after May 15 be ready to cover your fiber optic grass if you have a surprise late frost.

USDA Zone Info for Caribou

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 Caribou

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