When to Plant Iceland Poppy in Silvis, IL

Before planting it is a good idea to find your USDA Zone info to estimate your garden schedule. The most important data that the zone info tells us is average last frost and the lowest expected temperature for your area.

In Silvis you can determine when it's a good idea to plant iceland poppy by using the USDA zone info.

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Planting Calendar for Iceland Poppy

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

Iceland Poppy do well in some cold which tells us that you can plant them a bit earlier in the year than other frost tender plants.

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

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

Last Frost Date

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

Keep in mind that USDA zone info for Silvis is an average and the actual date of last frost can change quite a bit from year to year. Half of the time in Silvis it frosts late in the year after April 15 so just be sure to be ready to cover your iceland poppy in the event of a late frost.

USDA Zone Info for Silvis

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 Silvis

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