Before planting it is a good idea to find your USDA Zone info to figure out your garden schedule. The most important data that the zone info tells us is average last frost and the lowest expected temperature for your area.

A way of estimating when it's the best time to plant calliopsis is to look at the USDA zone info for Sandpoint.

Planting Calendar for Calliopsis

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

Calliopsis do not do well in cold weather which tells us that you really should wait until it warms up after the last frost before you can plant them.

The earliest that you can plant calliopsis in Sandpoint 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 calliopsis and expect a good harvest is probably August. If you wait any later than that and your calliopsis may not have a chance to grow to maturity. You can get started a couple of weeks earlier by starting your calliopsis indoors.

Last Frost Date

The average date of last frost is April 15 in Sandpoint. In the coldest months of winter you should expect an average low temperature of -10°F.

Since the USDA zone info for Sandpoint may not be accurate from year to year the actual date of last frost changes from year to year. Half of the time in Sandpoint you get a frost after April 15 so make sure that you are prepared to cover your calliopsis in the event of a late frost.

USDA Zone Info for Sandpoint

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 Sandpoint

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