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

The earliest that you can plant fanflower in Lewistown can be figured out by using the USDA zone info.

Planting Calendar for Fanflower

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

It's probably not a good idea to plant fanflower until after the last frost has passed because they require warm weather.

The earliest that you can plant fanflower in Lewistown is May. However, you really should wait until June if you don't want to take any chances.

The last month that you can plant fanflower and expect a good harvest is probably August. You probably don't want to wait any later than that or else your fanflower may not have a chance to fully mature. If you are starting your fanflower indoors then you might be able to get away with starting them a little bit earlier.

Last Frost Date

The average date of last frost is May 15 in Lewistown. It might get as low as -30°F during the coldest months of winter.

Since the USDA zone info for Lewistown is not always accurate the actual date of last frost is different every year. Half of the time in Lewistown it frosts late in the year after May 15 so make sure that you are prepared to protect your fanflower in the event of a surprise late frost.

USDA Zone Info for Lewistown

Here is the info for USDA Zone 4a.

Average Date of Last Frost (spring)	May 15
Average Date of First Frost (fall)	September 15
Lowest Expected Low	-30°F
Highest Expected Low	-25°F

This means that on a really cold year, the coldest it will get is -30°F. On most years you should be prepared to experience lows near -25°F.

Plants to Grow in Lewistown

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