When can I plant Impatiens in Geneva, IL

One of the first steps we take when we are figuring out our gardening schedule is find our USDA Zone info. The zone info helps tell us things like average date of last frost and lowest expected temperature for our area.

You should be able to figure out when it's a good idea to plant impatiens by reviewing the USDA zone info for Geneva.


Planting Calendar for Impatiens

Frost tolerance for impatiens: Not tolerant of frost.
When you should plant them: After the last frost.

Since impatiens require warm weather you really should wait until after the last frost when the weather gets warmer before you can plant them.

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

The earliest that you can plant impatiens in Geneva 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 impatiens and expect a good harvest is probably August. If you wait any later than that and your impatiens may not have a chance to fully mature. Starting your impatiens indoors is a great way to get them started a couple of weeks earlier.

Last Frost Date

In Geneva the average date of last frost happens on April 15. We should expect an average low temperature of -15°F in the coldest months of winter.

Since the USDA zone info for Geneva is not always accurate our actual date of last frost changes from year to year. Since half of the time in Geneva we get surprised by a frost after April 15 be ready to protect your impatiens in the event of a surprise late frost.

USDA Zone Info for Geneva

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 Geneva

You may be interested in our other planting guides for Geneva.