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.

The first chance to plant copperleaf in Polson can be estimated 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 when the weather gets warmer.

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

The earliest that you can plant copperleaf in Polson 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 fully mature. Starting your copperleaf indoors is a great way to get them started a couple of weeks earlier.

Last Frost Date

The average date of last frost is April 15 in Polson. It might get as low as -10°F during the coldest months of winter.

Remember that USDA zone info for Polson is not always accurate and the actual date of last frost changes from year to year. Since half of the time in Polson you get surprised by a frost after April 15 be ready to protect your copperleaf in the event of one of those late frosts.

USDA Zone Info for Polson

Here is the info for USDA Zone 6a.

Average Date of Last Frost (spring)	April 15
Average Date of First Frost (fall)	October 15
Lowest Expected Low	-10°F
Highest Expected Low	-5°F

This means that on a really cold year, the coldest it will get is -10°F. On most years you should be prepared to experience lows near -5°F.

Plants to Grow in Polson

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