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.

It's possible to figure out when it's a good idea to plant alternanthera by reviewing the USDA zone info for Grand Rapids.

Planting Calendar for Alternanthera

Frost tolerance for alternanthera:	Not tolerant of frost.
When to plant:	After all chance of frost has passed.

Since alternanthera are not cold tolerant you need to wait until after the last frost has passed before you can plant them.

The earliest that you can plant alternanthera in Grand Rapids 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 alternanthera and expect a good harvest is probably August. If you wait any later than that and your alternanthera may not have a chance to really do well. You can get started a couple of weeks earlier by starting your alternanthera indoors.

Last Frost Date

On average the last frost is on May 15 in Grand Rapids. In the coldest months of winter you can expect an average low temperature of -35°F.

Since the USDA zone info for Grand Rapids is not always accurate the actual date of last frost is different every year. Since half of the time in Grand Rapids you get surprised by a frost after May 15 be ready to protect your alternanthera in the event of a late frost.

USDA Zone Info for Grand Rapids

Here is the info for USDA Zone 3b.

Average Date of Last Frost (spring)	May 15
Average Date of First Frost (fall)	September 15
Lowest Expected Low	-35°F
Highest Expected Low	-30°F

This means that on a really cold year, the coldest it will get is -35°F. On most years you should be prepared to experience lows near -30°F.

Plants to Grow in Grand Rapids

You may be interested in your other planting guides for Grand Rapids.