When can I plant Tithonia in Evanston, IL

The USDA Zone info is a great tool for gardeners to help us figure out our gardening schedule. The zone info helps tell us things like average date of last frost and lowest expected temperature for our area.

It's possible to figure out when it's possible to plant tithonia by reviewing the USDA zone info for Evanston.


Planting Calendar for Tithonia

Frost tolerance for tithonia: Not tolerant of frost.
When you should plant them: After the last frost when the weather gets warmer.

Tithonia do not do well in cold weather which tells us that you need to wait until it warms up after all chance of frost has passed before you can plant them.

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

The earliest that you can plant tithonia 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 tithonia and expect a good harvest is probably August. You probably don't want to wait any later than that or else your tithonia may not have a chance to fully mature. You can get started a few weeks earlier by starting your tithonia indoors.

Last Frost Date

On average the last frost when the weather gets warmer is on April 15 in Evanston. It might get as low as -15°F during the coldest months of winter.

Since the USDA zone info for Evanston is just an average our actual date of last frost changes from year to year. Since half of the time in Evanston we get a frost after April 15 be ready to cover your tithonia if we have 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.