One of the first steps you take when you are getting a good idea your gardening schedule is find your USDA Zone info. The most important data that the zone info tells us is average last frost and the lowest expected temperature for your area.

In Tinley Park you can figure out when it's the best time to plant iceland poppy by referring to the USDA zone info.

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 moderate cold which tells us that you can get them planted earlier than plants that are more sensitive to the cold.

The earliest that you can plant iceland poppy in Tinley Park 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. Any later than that and your iceland poppy may not have a chance to fully mature. You can get started a few weeks earlier by starting your iceland poppy indoors.

Last Frost Date

On average all chance of frost has passed is on April 15 in Tinley Park. You can expect an average low temperature of -15°F in the coldest months of winter.

Keep in mind that USDA zone info for Tinley Park is an average and the actual date of last frost can change quite a bit from year to year. Half of the time in Tinley Park last frost occurs after April 15 so make sure that you are prepared to cover your iceland poppy in the event of a late frost.

USDA Zone Info for Tinley Park

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 Tinley Park

You may be interested in your other planting guides for Tinley Park.