Before planting it is a good idea to find your USDA Zone info to estimate your garden schedule. The most important data that the zone info tells us is average last frost and the lowest expected temperature for your area.

You should be able to figure out when you can plant iceberg lettuce by looking at the USDA zone info for Springboro.

Planting Calendar for Iceberg lettuce

Frost tolerance for iceberg lettuce:	Tolerant of a very small amount of frost.
When to plant:	Up to 3 weeks before last frost.

Iceberg lettuce are one of those plants that can tolerate a tiny bit of cold weather which tells us that you can plant them slightly earlier than other plants that might not handle the cold.

The earliest that you can plant iceberg lettuce in Springboro 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 iceberg lettuce and expect a good harvest is probably August. If you wait any later than that and your iceberg lettuce may not have a chance to fully mature. You can get started a couple of weeks earlier by starting your iceberg lettuce indoors.

Last Frost Date

On average all chance of frost has passed is on April 15 in Springboro. In the coldest months of winter you can expect an average low temperature of -10°F.

Remember that USDA zone info for Springboro is an average and the actual date of last frost will vary from year to year. Half of the time in Springboro there is a last frost after April 15 so always be ready to protect your iceberg lettuce in the event of a late frost.

USDA Zone Info for Springboro

Here is the info for USDA Zone 6a.

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

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

Plants to Grow in Springboro

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