When can I plant Alternaria in Evanston, IL

One of the best tools that we have as gardeners to help us estimate our gardening schedule is the USDA zone info. The zone info helps tell us things like average date of last frost and lowest expected temperature for our area.

The USDA zone info for Evanston can be used to figure out when it's the best time to plant alternaria.


Planting Calendar for Alternaria

Frost tolerance for alternaria: Not tolerant of frost.
When you should plant them: After all chance of frost has passed.

You can not plant alternaria until after the last frost has passed because they are not cold tolerant.

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

The earliest that you can plant alternaria in Evanston 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 alternaria and expect a good harvest is probably August. You probably don't want to wait any later than that or else your alternaria may not have a chance to grow to maturity. Starting your alternaria indoors is a great way to get them started a couple of weeks earlier.

Last Frost Date

On average the last frost is on April 15 in Evanston. We should expect an average low temperature of -15°F in the coldest months of winter.

Remember that our actual date of last frost is not always accurate because it is based on the USDA zone info for Evanston and it can change quite a bit from year to year. Since half of the time in Evanston last frost occurs after April 15 be ready to protect your alternaria 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.