One of the best tools that you have as gardeners to help us estimate 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.

By referring to the USDA zone info for Idaho Falls you will be able to estimate when it's the best time to plant garden cress.

Planting Calendar for Garden cress

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

Since garden cress do not do well in cold weather it's important to wait until after all chance of frost has passed before you can plant them.

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

Last Frost Date

In Idaho Falls the average date of last frost happens on April 15. In the coldest months of winter you should expect an average low temperature of -20°F.

Since the USDA zone info for Idaho Falls is not always accurate the actual date of last frost changes from year to year. Half of the time in Idaho Falls it frosts late in the year after April 15 so make sure that you are ready to cover your garden cress if you have a late frost.

USDA Zone Info for Idaho Falls

Here is the info for USDA Zone 5a.

Average Date of Last Frost (spring)	April 15
Average Date of First Frost (fall)	October 15
Lowest Expected Low	-20°F
Highest Expected Low	-15°F

This means that on a really cold year, the coldest it will get is -20°F. On most years you should be prepared to experience lows near -15°F.

Plants to Grow in Idaho Falls

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