When to Plant Oregano in Elmhurst, IL

One of the best tools that you have as gardeners to help us estimate your 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 your area.

The USDA zone info for Elmhurst can be read to figure out when it's a good idea to plant oregano.


Planting Calendar for Oregano

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

You can plant oregano a bit earlier in the year because they are one of those plants that can tolerate a little bit of cold weather.

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

The earliest that you can plant oregano in Elmhurst 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 oregano and expect a good harvest is probably September. Any later than that and your oregano may not have a chance to really do well. If you are starting your oregano indoors then you might be able to get away with starting them a little bit earlier.

Last Frost Date

In Elmhurst 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.

Since the USDA zone info for Elmhurst may not be accurate from year to year the actual date of last frost will vary from year to year. Since half of the time in Elmhurst it frosts late in the year after April 15 be ready to protect your oregano in the event of one of those late frosts.

USDA Zone Info for Elmhurst

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 Elmhurst

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