One of the best tools that you have as gardeners to help us figure out your gardening schedule is the 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.

One way of getting a good idea when it's possible to plant iceland poppy is to check out the USDA zone info for Potsdam.

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 are moderately cold tolerant which tells us that you can start planting them earlier than other frost tender plants.

The earliest that you can plant iceland poppy in Potsdam 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. If you wait any later than that and your iceland poppy may not have a chance to fully mature. If you are starting your iceland poppy indoors then you might be able to get away with starting them a little bit earlier.

Last Frost Date

On average the last frost is on May 15 in Potsdam. You should expect an average low temperature of -25°F in the coldest months of winter.

Since the USDA zone info for Potsdam is just an average the actual date of last frost will vary from year to year. Half of the time in Potsdam you get a frost after May 15 so be sure to be ready to protect your iceland poppy if you have a surprise late frost.

USDA Zone Info for Potsdam

Here is the info for USDA Zone 4b.

Average Date of Last Frost (spring)	May 15
Average Date of First Frost (fall)	September 15
Lowest Expected Low	-25°F
Highest Expected Low	-20°F

This means that on a really cold year, the coldest it will get is -25°F. On most years you should be prepared to experience lows near -20°F.

Plants to Grow in Potsdam

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