The USDA Zone info is a great tool for gardeners to help us figure out your gardening schedule. The zone info helps tell us things like average date of last frost and lowest expected temperature for your area.

You should be able to figure out when you can plant iceland poppy by using the USDA zone info for Waterloo.

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 can survive in some cold which means that you can plant them a little bit earlier in the year than more sensitive plants.

The earliest that you can plant iceland poppy in Waterloo 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 all chance of frost has passed is on April 15 in Waterloo. In the coldest months of winter you should expect an average low temperature of -5°F.

It's important to remember that USDA zone info for Waterloo is just an average and the actual date of last frost is different every year. Since half of the time in Waterloo it frosts late in the year after April 15 be ready to cover your iceland poppy if you have a late frost.

USDA Zone Info for Waterloo

Here is the info for USDA Zone 6b.

Average Date of Last Frost (spring)	April 15
Average Date of First Frost (fall)	October 15
Lowest Expected Low	-5°F
Highest Expected Low	0°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 0°F.

Plants to Grow in Waterloo

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