When to Plant Columbine in River Grove, 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 USDA zone info for River Grove should be looked at to estimate when it's possible to plant columbine.


Planting Calendar for Columbine

Frost tolerance for columbine: Tolerant of some frost.
When to plant: Up to 5 weeks before last frost.

Columbine do well in moderate cold which tells us that you can plant them a little bit earlier than other plants that might not handle the cold.

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

The earliest that you can plant columbine in River Grove is February. However, you really should wait until March if you don't want to take any chances.

The last month that you can plant columbine and expect a good harvest is probably September. Any later than that and your columbine may not have a chance to grow to maturity. Starting your columbine indoors is a great way to get them started a couple of weeks earlier.

Last Frost Date

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

Always keep in mind that USDA zone info for River Grove is just an average and the actual date of last frost changes from year to year. Since half of the time in River Grove you get surprised by a frost after April 15 be ready to protect your columbine in the event of a surprise late frost.

USDA Zone Info for River Grove

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 River Grove

You may be interested in your other planting guides for River Grove.