The USDA Zone info is a great tool for gardeners to help us estimate your gardening 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 determining when it's a good idea to plant asparagus fern is to examine the USDA zone info for Post Falls.

Planting Calendar for Asparagus Fern

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

It's probably a bad idea to plant asparagus fern until after all chance of frost has passed because they do not do well in cold weather.

The earliest that you can plant asparagus fern in Post Falls 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 asparagus fern and expect a good harvest is probably August. You probably don't want to wait any later than that or else your asparagus fern may not have a chance to really do well. If you are starting your asparagus fern indoors then you might be able to get away with starting them a couple of weeks earlier.

Last Frost Date

On average the last frost has passed is on April 15 in Post Falls. You can expect an average low temperature of -5°F in the coldest months of winter.

Since the USDA zone info for Post Falls is just an average the actual date of last frost will vary from year to year. Half of the time in Post Falls there is a last frost after April 15 so be sure to be ready to protect your asparagus fern in the event of a late frost.

USDA Zone Info for Post Falls

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 Post Falls

You may be interested in your other planting guides for Post Falls.