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When to Plant Oriental poppies in Sterling, IL

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

It's a good idea to estimate when it's possible to plant oriental poppies by looking at the USDA zone info for Sterling.

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Planting Calendar for Oriental poppies

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

Oriental poppies do well in moderate cold which tells us that you can plant them a little bit earlier than other plants that might not handle the cold.

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

The earliest that you can plant oriental poppies in Sterling 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 oriental poppies and expect a good harvest is probably September. You probably don't want to wait any later than that or else your oriental poppies may not have a chance to grow to maturity. If you are starting your oriental poppies indoors then you might be able to get away with starting them a couple of weeks earlier.

Last Frost Date

In Sterling the average date of last frost happens on April 15. In the coldest months of winter you can expect an average low temperature of -15°F.

Keep in mind that USDA zone info for Sterling may not be accurate from year to year and the actual date of last frost can change quite a bit from year to year. Since half of the time in Sterling there is a last frost after April 15 be ready to cover your oriental poppies if you have a late frost.

USDA Zone Info for Sterling

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 Sterling

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