Before planting it is a good idea to find your USDA Zone info to figure out your garden schedule. The zone info helps tell us things like average date of last frost and lowest expected temperature for your area.

In Idaho Falls you can determine when it's the best time to plant fountain grass by using the USDA zone info.

Planting Calendar for Fountain Grass

Frost tolerance for fountain grass:	Tolerant of a very small amount of frost.
When to plant:	Up to 3 weeks before last frost.

Since fountain grass do ok in moderate cold you can plant them a bit earlier in the year than other plants that might not handle the cold.

The earliest that you can plant fountain grass in Idaho Falls is March. However, you really should wait until April if you don't want to take any chances.

The last month that you can plant fountain grass and expect a good harvest is probably August. If you wait any later than that and your fountain grass may not have a chance to really do well. Starting your fountain grass indoors is a great way to get them started a few weeks earlier.

Last Frost Date

On average the last frost is on April 15 in Idaho Falls. It might get as low as -20°F during the coldest months of winter.

Since the USDA zone info for Idaho Falls may not be accurate from year to year the actual date of last frost changes from year to year. Since half of the time in Idaho Falls you get surprised by a frost after April 15 be ready to cover your fountain grass in the event of one of those late frosts.

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.