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.

In Byron you can determine when it's a good idea to plant iceland poppy by checking out the USDA zone info.

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 get them planted earlier than other frost tender plants.

The earliest that you can plant iceland poppy in Byron 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 really do well. Starting your iceland poppy indoors is a great way to get them started a little bit earlier.

Last Frost Date

On average the last frost is on May 15 in Byron. It might get as low as -25°F during the coldest months of winter.

It's important to remember that USDA zone info for Byron is just an average and the actual date of last frost will vary from year to year. Half of the time in Byron you get a frost after May 15 so just be sure to be ready to protect your iceland poppy in the event of a late frost.

USDA Zone Info for Byron

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 Byron

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