Before planting it is a good idea to find your USDA Zone info to determine 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.

In Aurora you can figure out when it's possible to plant romaine lettuce by referring to the USDA zone info.

Planting Calendar for Romaine lettuce

Frost tolerance for romaine lettuce:	Very tolerant of frost.
When to plant:	Up to 7 weeks before last frost.

Romaine lettuce do ok in quite a bit of cold which tells us that you can plant them a lot earlier in the year than plants that are more sensitive to the cold.

The earliest that you can plant romaine lettuce in Aurora 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 romaine lettuce and expect a good harvest is probably September. Any later than that and your romaine lettuce may not have a chance to fully mature. You can get started a little bit earlier by starting your romaine lettuce indoors.

Last Frost Date

On average the last frost has passed is on April 15 in Aurora. It might get as low as -10°F during the coldest months of winter.

Since the USDA zone info for Aurora may not be accurate from year to year the actual date of last frost will vary from year to year. Half of the time in Aurora you get a frost after April 15 so just be sure to be ready to cover your romaine lettuce if you have one of those late frosts.

USDA Zone Info for Aurora

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 Aurora

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