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.

By using the USDA zone info for Crystal Lake you will be able to figure out when it's a good idea to plant iceland poppy.

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 plant them just a bit earlier in the year than other frost tender plants.

The earliest that you can plant iceland poppy in Crystal Lake 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 grow to maturity. You can get started a little bit earlier by starting your iceland poppy indoors.

Last Frost Date

On average the last frost when the weather gets warmer is on April 15 in Crystal Lake. It might get as low as -15°F during the coldest months of winter.

Always keep in mind that USDA zone info for Crystal Lake is just an average and the actual date of last frost can change quite a bit from year to year. Half of the time in Crystal Lake there is a last frost after April 15 so be sure to be ready to cover your iceland poppy if you have a late frost.

USDA Zone Info for Crystal Lake

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 Crystal Lake

You may be interested in your other planting guides for Crystal Lake.