One of the first steps you take when you are determining 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.

The USDA zone info for Rhinelander should be reviewed 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 get them planted earlier than more sensitive plants.

The earliest that you can plant iceland poppy in Rhinelander is March. However, you really should wait until April 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 August. Any later than that and your iceland poppy may not have a chance to fully mature. You can get started a little bit earlier by starting your iceland poppy indoors.

Last Frost Date

The average date of last frost is May 15 in Rhinelander. You can expect an average low temperature of -30°F in the coldest months of winter.

Remember that the actual date of last frost is not always accurate because it is based on the USDA zone info for Rhinelander and it changes from year to year. Since half of the time in Rhinelander you get surprised by a frost after May 15 be ready to protect your iceland poppy if you have one of those late frosts.

USDA Zone Info for Rhinelander

Here is the info for USDA Zone 4a.

Average Date of Last Frost (spring)	May 15
Average Date of First Frost (fall)	September 15
Lowest Expected Low	-30°F
Highest Expected Low	-25°F

This means that on a really cold year, the coldest it will get is -30°F. On most years you should be prepared to experience lows near -25°F.

Plants to Grow in Rhinelander

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