When to Plant Lupine in West Chicago, IL

Before planting it is a good idea to find your USDA Zone info to estimate your garden schedule. The zone info helps tell us things like average date of last frost and lowest expected temperature for your area.

The first opportunity to plant lupine in West Chicago can be figured out by referring to the USDA zone info.


Planting Calendar for Lupine

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

Since lupine do well in moderate cold you can plant them just a bit earlier in the year than other plants that might not handle the cold.

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

The earliest that you can plant lupine in West Chicago 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 lupine and expect a good harvest is probably September. If you wait any later than that and your lupine may not have a chance to really do well. Starting your lupine indoors is a great way to get them started a few weeks earlier.

Last Frost Date

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

Remember that the actual date of last frost is not always accurate because it is based on the USDA zone info for West Chicago and it is different every year. Half of the time in West Chicago it frosts late in the year after April 15 so make sure that you are prepared to cover your lupine in the event of a surprise late frost.

USDA Zone Info for West Chicago

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 West Chicago

You may be interested in your other planting guides for West Chicago.