One of the first steps you take when you are getting a good idea your gardening schedule is find your USDA Zone info. 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 Sullivan you will be able to estimate 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 start planting them earlier than other frost tender plants.

The earliest that you can plant iceland poppy in Sullivan 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 little bit earlier by starting your iceland poppy indoors.

Last Frost Date

The average date of last frost is April 15 in Sullivan. You should expect an average low temperature of 5°F in the coldest months of winter.

Since the USDA zone info for Sullivan is not always accurate the actual date of last frost can change quite a bit from year to year. Since half of the time in Sullivan there is a last frost after April 15 be ready to cover your iceland poppy if you have a late frost.

USDA Zone Info for Sullivan

Here is the info for USDA Zone 7b.

Average Date of Last Frost (spring)	April 15
Average Date of First Frost (fall)	October 15
Lowest Expected Low	5°F
Highest Expected Low	10°F

This means that on a really cold year, the coldest it will get is 5°F. On most years you should be prepared to experience lows near 10°F.

Plants to Grow in Sullivan

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