When to Plant Fanflower in Wilmington, IL

Before planting it is a good idea to find your USDA Zone info to estimate your garden schedule. The most important data that the zone info tells us is average last frost and the lowest expected temperature for your area.

The USDA zone info for Wilmington should be used to figure out when it's the best time to plant fanflower.

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Planting Calendar for Fanflower

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

Fanflower are not cold tolerant which tells us that you really should wait until it warms up after the last frost has passed before you can plant them.

JanFebMarAprMayJunJulAugSepOctNovDec
Legend 
A good time to plant fanflower
Possibly ok, but a risky time to plant fanflower
Probably not a good time to plant fanflower

The earliest that you can plant fanflower in Wilmington 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 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 grow to maturity. You can get started a couple of weeks earlier by starting your fanflower indoors.

Last Frost Date

The average date of last frost is April 15 in Wilmington. You can expect an average low temperature of -15°F in the coldest months of winter.

Just be sure to remember that USDA zone info for Wilmington is just an average and the actual date of last frost will vary from year to year. Half of the time in Wilmington you get surprised by a frost after April 15 so always be ready to cover your fanflower in the event of a late frost.

USDA Zone Info for Wilmington

Here is the info for USDA Zone 5b.

Average Date of Last Frost (spring)April 15
Average Date of First Frost (fall)October 15
Lowest Expected Low-15°F
Highest Expected Low-10°F

This means that on a really cold year, the coldest it will get is -15°F. On most years you should be prepared to experience lows near -10°F.

Plants to Grow in Wilmington

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