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.

It's a good idea to determine when it's a good idea to plant fountain grass by using the USDA zone info for Winthrop Harbor.

Planting Calendar for Fountain Grass

Frost tolerance for fountain grass:	Tolerant of a very small amount of frost.
When to plant:	Up to 3 weeks before last frost.

Fountain Grass are barely cold tolerant which means that you can plant them slightly earlier than plants that are more sensitive to the cold.

The earliest that you can plant fountain grass in Winthrop Harbor 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 fountain grass and expect a good harvest is probably August. If you wait any later than that and your fountain grass may not have a chance to fully mature. Starting your fountain grass indoors is a great way to get them started a little bit earlier.

Last Frost Date

The average date of last frost is April 15 in Winthrop Harbor. In the coldest months of winter you can expect an average low temperature of -15°F.

Always keep in mind that USDA zone info for Winthrop Harbor is not always accurate and the actual date of last frost is different every year. Half of the time in Winthrop Harbor you get a frost after April 15 so just be sure to be ready to cover your fountain grass in the event of a surprise late frost.

USDA Zone Info for Winthrop Harbor

Here is the info for USDA Zone 5b.

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

This means that on a really cold year, the coldest it will get is -15°F. On most years you should be prepared to experience lows near -10°F.

Plants to Grow in Winthrop Harbor

You may be interested in your other planting guides for Winthrop Harbor.