The USDA Zone info is a great tool for gardeners to help us estimate your gardening schedule. The zone info helps tell us things like average date of last frost and lowest expected temperature for your area.

One way of figuring out when to plant copperleaf is to examine the USDA zone info for Potsdam.

Planting Calendar for Copperleaf

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

Since copperleaf require warm weather it's important to wait until after the last frost when the weather gets warmer before you can plant them.

The earliest that you can plant copperleaf in Potsdam 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 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 grow to maturity. You can get started a little bit earlier by starting your copperleaf indoors.

Last Frost Date

On average all chance of frost has passed is on May 15 in Potsdam. It might get as low as -25°F during the coldest months of winter.

Keep in mind that USDA zone info for Potsdam is an average and the actual date of last frost can change quite a bit from year to year. Since half of the time in Potsdam you get surprised by a frost after May 15 be ready to cover your copperleaf if you have a late frost.

USDA Zone Info for Potsdam

Here is the info for USDA Zone 4b.

Average Date of Last Frost (spring)	May 15
Average Date of First Frost (fall)	September 15
Lowest Expected Low	-25°F
Highest Expected Low	-20°F

This means that on a really cold year, the coldest it will get is -25°F. On most years you should be prepared to experience lows near -20°F.

Plants to Grow in Potsdam

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