One of the best tools that you have as gardeners to help us figure out your gardening schedule is the USDA zone info. The most important data that the zone info tells us is average last frost and the lowest expected temperature for your area.

The best time to plant copperleaf in River Rouge should be figured out by checking out the USDA zone info.

Planting Calendar for Copperleaf

Frost tolerance for copperleaf:	Not tolerant of frost.
When to plant:	After the last frost.

Copperleaf do not do well in cold weather which means that you have to wait until it warms up after the last frost before you can plant them.

The earliest that you can plant copperleaf in River Rouge is April. However, you really should wait until May if you don't want to take any chances.

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

Last Frost Date

On average the last frost when the weather gets warmer is on April 15 in River Rouge. In the coldest months of winter you can expect an average low temperature of -5°F.

Since the USDA zone info for River Rouge is an average the actual date of last frost changes from year to year. Since half of the time in River Rouge there is a last frost after April 15 be ready to protect your copperleaf in the event of one of those late frosts.

USDA Zone Info for River Rouge

Here is the info for USDA Zone 6b.

Average Date of Last Frost (spring)	April 15
Average Date of First Frost (fall)	October 15
Lowest Expected Low	-5°F
Highest Expected Low	0°F

This means that on a really cold year, the coldest it will get is -5°F. On most years you should be prepared to experience lows near 0°F.

Plants to Grow in River Rouge

You may be interested in your other planting guides for River Rouge.