When to Plant Mustard in Mendota, IL

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

You should be able to estimate when you can plant mustard by referring to the USDA zone info for Mendota.


Planting Calendar for Mustard

Frost tolerance for mustard: Not tolerant of frost.
When to plant: After the last frost when the weather gets warmer.

Since mustard do not do well in cold weather it is necessary to wait until after all chance of frost has passed before you can plant them.

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

The earliest that you can plant mustard in Mendota 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 mustard and expect a good harvest is probably August. Any later than that and your mustard may not have a chance to grow to maturity. You can get started a few weeks earlier by starting your mustard indoors.

Last Frost Date

The average date of last frost is April 15 in Mendota. In the coldest months of winter you should expect an average low temperature of -15°F.

Remember that the actual date of last frost is not always accurate because it is based on the USDA zone info for Mendota and it will vary from year to year. Half of the time in Mendota there is a last frost after April 15 so be sure to be ready to cover your mustard in the event of a late frost.

USDA Zone Info for Mendota

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 Mendota

You may be interested in your other planting guides for Mendota.