The USDA Zone info is a great tool for gardeners to help us determine your gardening schedule. The zone info helps tell us things like average date of last frost and lowest expected temperature for your area.

It's a good idea to determine when to plant fanflower by looking at the USDA zone info for Princeton.

Planting Calendar for Fanflower

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

Fanflower require warm weather which means that it is important to wait until it warms up after the last frost before you can plant them.

The earliest that you can plant fanflower in Princeton 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. Any later than that and your fanflower may not have a chance to really do well. You can get started a little bit earlier by starting your fanflower indoors.

Last Frost Date

On average the last frost is on May 15 in Princeton. In the coldest months of winter you should expect an average low temperature of -30°F.

Since the USDA zone info for Princeton is just an average the actual date of last frost changes from year to year. Since half of the time in Princeton there is a last frost after May 15 be ready to cover your fanflower if you have a late frost.

USDA Zone Info for Princeton

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 Princeton

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