When can I plant Anchusa in Evanston, IL

One of the best tools that we have as gardeners to help us figure out our gardening schedule is the USDA zone info. The most important data that the zone info tells us is average last frost and the lowest expected temperature for our area.

A way of determining when it's the best time to plant anchusa is to look at the USDA zone info for Evanston.


Planting Calendar for Anchusa

Frost tolerance for anchusa: Very tolerant of frost.
When you should plant them: Up to 7 weeks before last frost.

You can plant anchusa a lot earlier in the year because they are very cold tolerant.

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

The earliest that you can plant anchusa in Evanston 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 anchusa and expect a good harvest is probably September. If you wait any later than that and your anchusa may not have a chance to fully mature. Starting your anchusa indoors is a great way to get them started a little bit earlier.

Last Frost Date

In Evanston the average date of last frost happens on April 15. We 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 Evanston is not always accurate and our actual date of last frost changes from year to year. Half of the time in Evanston we get surprised by a frost after April 15 so be sure to be ready to cover your anchusa in the event of a late frost.

USDA Zone Info for Evanston

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 Evanston

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