When to Plant Browallia in Yorkville, IL

The USDA Zone info is a great tool for gardeners to help us figure out your gardening schedule. 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 browallia in Yorkville can be estimated by reviewing the USDA zone info.

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Planting Calendar for Browallia

Frost tolerance for browallia: Not tolerant of frost.
When to plant: After the last frost when the weather gets warmer.

Browallia are not cold tolerant which tells us that it's important to wait until it warms up after all chance of frost has passed before you can plant them.

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

The earliest that you can plant browallia in Yorkville 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 browallia and expect a good harvest is probably August. If you wait any later than that and your browallia may not have a chance to really do well. If you are starting your browallia indoors then you might be able to get away with starting them a few weeks earlier.

Last Frost Date

On average the last frost has passed is on April 15 in Yorkville. In the coldest months of winter you should expect an average low temperature of -15°F.

Always keep in mind that USDA zone info for Yorkville is not always accurate and the actual date of last frost will vary from year to year. Half of the time in Yorkville you get a frost after April 15 so make sure that you are ready to protect your browallia in the event of a surprise late frost.

USDA Zone Info for Yorkville

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 Yorkville

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